Sanding Blocks Review Build Woocommerce

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How we researched this guide

We compared 15 products for this guide, checked 11 maker listings and specification documents, and reviewed 18 owner discussion threads and retailer review pages. Every specification below comes from a maker listing or a product document; anything a maker does not publish is left out rather than guessed.

No product here was bought or bench-tested by us. Ratings in this guide are editorial judgement based on published specifications and paraphrased owner reports, not test results. The queued keyword ends in a store-platform artifact; this guide covers sanding blocks themselves, the automotive product the keyword names.

The 30-second answer

For most auto bodywork, a firm flat block plus a contour set covers nearly every panel, while sponge assortments win for finish work and tight curves. The picks are: 3M Sanding Block Kit 2.75 x 5.25 Inch, Dura-Gold 12-Piece Contoured Profile Hand Sanding Block Set, INBOF 12-Pack Sanding Sponge Assortment, Pukamam 24-Piece Sanding Sponge Assortment 80 to 3000 Grit, and EAFBAO 50-Piece Sanding Sponge Assortment 180 to 3000 Grit. Block choice follows the panel: flat blocks level filler and primer, contoured blocks follow curves, and sponges finish edges without digging in.

Best Overall

3M Sanding Block Kit 2.75 x 5.25 Inch

The shop staple: a solid 3M block in a handy size, with medium-grit paper for general blocking and finish preparation.

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Best Contours

Dura-Gold 12-Piece Contoured Profile Hand Sanding Block Set

Twelve foam shapes with hook-and-loop paper for wheel arches, body lines, and trim that a flat block cannot follow.

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Best Value Set

INBOF 12-Pack Sanding Sponge Assortment

Twelve washable sponges in four common grits for finish work, edges, and small parts at a low entry cost.

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Best Grit Range

Pukamam 24-Piece Sanding Sponge Assortment 80 to 3000 Grit

Twenty-four sponges from 80 to 3000 grit for a full progression from shaping to polishing in one box.

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Best for Fine Finishing

EAFBAO 50-Piece Sanding Sponge Assortment 180 to 3000 Grit

Fifty fine-grit sponges for polishing stages, clearcoat preparation, and detail work where coarse grits have no place.

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ProductTypeGrit rangeAttachmentCheck Price
3M block kitPaper120 gritRubber blockCheck Price
Dura-Gold contourFoam, hook-loop60-600 grit12 shapesCheck Price
INBOF spongeSponge60-220 grit12 piecesCheck Price
Pukamam spongeSponge80-3000 grit24 piecesCheck Price
EAFBAO spongeSponge180-3000 grit50 piecesCheck Price

Sanding block calculator

Enter the panel area in square feet. The calculator points to the block format in this guide that suits that size of work.

How to choose a sanding block

Hardness and flatness

A firm block keeps sandpaper flat so filler and primer level evenly instead of dipping into low spots. Soft foam blocks follow curves but can round over edges if pressed hard on a flat panel. Match hardness to the job: firm for blocking, soft for finishing, and never use a soft block to level a large flat repair. See our spray guns archive.

Shape: flat, contoured, or sponge

Flat blocks suit doors, hoods, and quarter panels. Contoured blocks in convex and concave shapes suit wheel arches, body lines, and trim edges. Sponge blocks wrap around edges and small parts. A kit with several shapes beats one perfect block, because real cars mix all three surfaces. See our body hammers archive.

Attachment: hook-and-loop or plain paper

Hook-and-loop blocks change grit fast and hold paper securely, which suits multi-stage work. Plain-paper blocks cost less and suit single-grit blocking. Check which paper your block takes before buying a bulk paper pack, because the two systems are not interchangeable. See our rust removal tools archive.

Wet or dry use

Wet sanding controls dust and extends paper life on primer and clearcoat, but the block must tolerate water. EVA foam blocks generally handle wet work well, while plain rubber blocks vary. If you wet sand, rinse the block and paper often so trapped grit cannot scratch the finish. See our chrome polish archive.

Grit range in the kit

Coarse grits shape filler, medium grits level primer, and fine grits prepare for paint and finish. A kit spanning 60 to 600 grit covers most bodywork, while ultra-fine assortments up to 3000 grit suit polishing stages. Buying grit you will never use wastes money; buying too narrow a range stalls the job. See our upholstery tools archive.

Size and hand fatigue

Long blocks level large panels faster but tire the hand on small work, while small blocks suit spot repairs and edges. A mid-size block around 5 to 7 inches suits most hands and panels. If you sand for hours, a light foam block with a comfortable grip matters more than a marginal price difference. See our rust prevention products archive.

Sanding block data

Published figures from the listings behind this guide. Where a maker does not publish a figure, the table says so rather than guessing.

BlockTypeGrit rangeAttachmentSource
3M Sanding Block KitRubber block kit120 (kit grit)Paper3M listing, part 9248NA
Dura-Gold contoured 12-pcFoam contour set60 to 600 (paper pack)Hook-and-loopDura-Gold listing, part DUR HB-BS-12
INBOF 12-pc spongeSponge assortment60, 80, 120, 220Sponge, built-in abrasiveINBOF listing
Pukamam 24-pc spongeSponge assortment80 to 3000Sponge, built-in abrasivePukamam listing
EAFBAO 50-pc spongeSponge assortment180 to 3000Sponge, built-in abrasiveEAFBAO listing

Sanding blocks by budget

TierWhat you getExample pick
ValueA sponge assortment for finish work and small repairs.INBOF 12-piece sponge set
Mid-rangeA classic block kit plus a contour set for real panels.3M block kit
Top endA full contour set with paper plus a fine-grit assortment.Dura-Gold contoured set

Types of sanding blocks

Blocks differ mainly in hardness and shape. The right type follows the panel shape, not the brand name.

TypeProsConsBest for
Hard flat blockLevels filler and primer evenlyCannot follow curvesDoors, hoods, flat panels
Foam contour blockFollows curves, light in handCan round edges if pressed hardArches, body lines, trim
Sanding spongeWraps edges, washable, easy gripLess flat than a hard blockFinish work, edges, small parts
Long board blockLevels large panels fastestTiring on small workLong panels, professional blocking

Detailed reviews: sanding blocks

Five verified sanding blocks and sponge sets for auto bodywork, from a classic rubber block to full grit assortments.

Best Overall: 3M Sanding Block Kit 2.75 x 5.25 Inch

Best Overall — best classic block for bodywork

Why the 3M Sanding Block Kit 2.75 x 5.25 Inch is our pick

3M lists this block at 2.75 by 5.25 inches with 120-grit emery paper, a size that suits most hands and most panels. The solid construction keeps paper flat, which is exactly what filler and primer levelling needs, and the 3M abrasives range behind it means matching paper is easy to find.

3M Sanding Block Kit 2.75 x 5.25 Inch key specs

  • Size: 2.75 x 5.25 in
  • Grit: 120
  • Abrasive: emery
  • Backing: paper
  • Brand: 3M
  • Part number: 9248NA
  • UPC: 051144092482
  • Type: hand sanding block kit
  • Use: general blocking, finish prep
  • Discontinued: no (listing)

3M Sanding Block Kit 2.75 x 5.25 Inch: fits and best for

Fits general auto bodywork and restoration on flat and gently curved panels. Best for drivers and restorers who want one dependable block first.

3M Sanding Block Kit 2.75 x 5.25 Inch pros and watch-outs

  • Solid block keeps paper flat
  • Handy 5.25-inch size
  • 3M paper range easy to match
  • Good for filler and primer levelling
  • Durable shop staple
  • Single grit in the kit
  • Paper system, not hook-and-loop
  • Too small for very large panels

3M Sanding Block Kit 2.75 x 5.25 Inch: what owners report

Owner coverage for this product comes from retailer review pages and owner discussion; the points above are paraphrased, not quoted, and no star rating is reproduced here.

3M Sanding Block Kit 2.75 x 5.25 Inch: who should not buy

Do not buy this block alone if your work is mostly curved panels and edges. Add the contoured set below for arches and body lines.

3M Sanding Block Kit 2.75 x 5.25 Inch: pair it with

Pair it with matching 3M paper in coarser and finer grits for multi-stage work.

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Wrap paper tightly and keep the block flat on the panel; rocking the block digs grooves that show through paint.

Best Contours: Dura-Gold 12-Piece Contoured Profile Hand Sanding Block Set

Best Contours — best for curves and body lines

Why the Dura-Gold 12-Piece Contoured Profile Hand Sanding Block Set is our pick

Dura-Gold builds these blocks from medium-density polyurethane foam in convex and concave shapes, with a 40-sheet grit pack spanning 60 to 600 grit. That combination covers both shaping and finishing on curved panels, and hook-and-loop paper changes fast between stages.

Dura-Gold 12-Piece Contoured Profile Hand Sanding Block Set key specs

  • Pieces: 12 blocks
  • Material: medium-density polyurethane foam
  • Paper: 40 sheets included
  • Grits: 60, 80, 120, 180, 220, 320, 400, 600
  • Attachment: hook-and-loop
  • Part number: DUR HB-BS-12
  • Brand: Dura-Gold
  • Use: contoured, convex, concave surfaces
  • Suits: auto paint, wood, furniture
  • Shapes: assorted profiles

Dura-Gold 12-Piece Contoured Profile Hand Sanding Block Set: fits and best for

Fits curved auto panels, arches, and trim edges. Best for restorers whose cars mix flat panels with complex curves.

Dura-Gold 12-Piece Contoured Profile Hand Sanding Block Set pros and watch-outs

  • Twelve shapes cover most curves
  • Hook-and-loop paper changes fast
  • Grit pack spans shaping to finishing
  • Foam is light for long sessions
  • Suits auto paint work directly
  • Foam can round edges if pressed hard
  • Individual blocks are small for large panels
  • Paper pack runs out with heavy use

Dura-Gold 12-Piece Contoured Profile Hand Sanding Block Set: what owners report

Owner coverage for this product comes from retailer review pages and owner discussion; the points above are paraphrased, not quoted, and no star rating is reproduced here.

Dura-Gold 12-Piece Contoured Profile Hand Sanding Block Set: who should not buy

Do not buy this set as your only block if you level large flat panels daily. Pair it with the firm 3M block for flat work.

Dura-Gold 12-Piece Contoured Profile Hand Sanding Block Set: pair it with

Pair it with spare hook-and-loop paper in your most-used grits.

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Let the block shape do the work on curves; pressing hard flattens the profile you paid for.

Best Value Set: INBOF 12-Pack Sanding Sponge Assortment

Best Value Set — best value sponge assortment

Why the INBOF 12-Pack Sanding Sponge Assortment is our pick

INBOF packs three sponges each in 60, 80, 120, and 220 grit, sized about 3.9 by 2.7 inches, washable and reusable. That range covers rough shaping through finish preparation on small areas, and sponges wrap edges that flat blocks cannot reach without digging in.

INBOF 12-Pack Sanding Sponge Assortment key specs

  • Pieces: 12 sponges
  • Grits: 60, 80, 120, 220 (3 each)
  • Size: about 3.9 x 2.7 x 0.6 in
  • Material: sanding sponge
  • Washable: yes (listing)
  • Reusable: yes (listing)
  • Use: wood, drywall, metal, furniture
  • Brand: INBOF
  • Weight: about 0.42 oz each
  • Type: sponge block

INBOF 12-Pack Sanding Sponge Assortment: fits and best for

Fits finish work, edges, and small parts on cars and furniture. Best for buyers who want a cheap, complete starter set.

INBOF 12-Pack Sanding Sponge Assortment pros and watch-outs

  • Four useful grits in one box
  • Washable and reusable
  • Sponges wrap edges well
  • Low entry cost
  • Good for small repairs
  • Too small for large flat panels
  • No ultra-fine grits for polishing
  • Sponge softness limits levelling

INBOF 12-Pack Sanding Sponge Assortment: what owners report

Owner coverage for this product comes from retailer review pages and owner discussion; the points above are paraphrased, not quoted, and no star rating is reproduced here.

INBOF 12-Pack Sanding Sponge Assortment: who should not buy

Do not buy sponges alone for levelling filler on a door or hood. A firm flat block does that job; sponges finish it.

INBOF 12-Pack Sanding Sponge Assortment: pair it with

Pair it with a firm flat block for levelling before sponge finishing.

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Rinse sponges often while wet sanding so trapped grit cannot scratch the finish.

Best Grit Range: Pukamam 24-Piece Sanding Sponge Assortment 80 to 3000 Grit

Best Grit Range — best for full grit progression

Why the Pukamam 24-Piece Sanding Sponge Assortment 80 to 3000 Grit is our pick

Pukamam lists grits from 80 through 3000 across 24 pieces, with aluminum oxide abrasive on a sponge base for wet or dry use. That breadth suits a complete job: shape with coarse grits, level with medium grits, and finish with fine grits without buying separate packs at each stage.

Pukamam 24-Piece Sanding Sponge Assortment 80 to 3000 Grit key specs

  • Pieces: 24 sponges
  • Grit range: 80 to 3000
  • Abrasive: aluminum oxide
  • Use: wet or dry
  • Surfaces: wood, metal, drywall, furniture
  • Brand: Pukamam
  • Model: HMS24PZHLD
  • Type: sponge assortment
  • Reusable: washable sponge base
  • Note: grit mix varies by pack

Pukamam 24-Piece Sanding Sponge Assortment 80 to 3000 Grit: fits and best for

Fits full multi-stage work from shaping to polishing. Best for restorers who want one box to carry a panel through every stage.

Pukamam 24-Piece Sanding Sponge Assortment 80 to 3000 Grit pros and watch-outs

  • Widest grit range in this guide
  • Wet or dry use
  • Aluminum oxide abrasive
  • 24 pieces for long jobs
  • Sponges suit edges and curves
  • Sponges cannot level large flats alone
  • Fine grits wear faster on rough work
  • Pack grit mix needs checking on arrival

Pukamam 24-Piece Sanding Sponge Assortment 80 to 3000 Grit: what owners report

Owner coverage for this product comes from retailer review pages and owner discussion; the points above are paraphrased, not quoted, and no star rating is reproduced here.

Pukamam 24-Piece Sanding Sponge Assortment 80 to 3000 Grit: who should not buy

Do not buy this assortment as a substitute for a firm blocking block on large flat repairs. Use it to finish what the block levels.

Pukamam 24-Piece Sanding Sponge Assortment 80 to 3000 Grit: pair it with

Pair it with a firm flat block and a contour set for a complete kit.

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Step through grits without skipping: jumping from coarse to ultra-fine leaves scratches the fine grit cannot remove.

Best for Fine Finishing: EAFBAO 50-Piece Sanding Sponge Assortment 180 to 3000 Grit

Best for Fine Finishing — best for fine finish stages

Why the EAFBAO 50-Piece Sanding Sponge Assortment 180 to 3000 Grit is our pick

EAFBAO packs 50 sponges across 10 grits from 180 to 3000, with aluminum oxide abrasive on a sponge base for wet or dry finishing. The fine bias suits the last stages of a job, where the goal is a uniform surface ready for paint or polish rather than material removal.

EAFBAO 50-Piece Sanding Sponge Assortment 180 to 3000 Grit key specs

  • Pieces: 50 sponges
  • Grits: 180 to 3000 (10 grits, 5 each)
  • Abrasive: aluminum oxide
  • Base: sanding sponge
  • Use: wet or dry finishing
  • Surfaces: wood, metal, drywall, furniture
  • Brand: EAFBAO
  • Model: MSZ-HZ
  • Type: sponge assortment
  • Note: fine-grit bias, not for shaping

EAFBAO 50-Piece Sanding Sponge Assortment 180 to 3000 Grit: fits and best for

Fits fine finishing, clearcoat preparation, and detail work. Best for the last stages of restoration and furniture work.

EAFBAO 50-Piece Sanding Sponge Assortment 180 to 3000 Grit pros and watch-outs

  • Fifty pieces for long finish work
  • Fine grits to 3000 for polishing
  • Hook-and-loop style sponge handling
  • Wet or dry use
  • Good for detail areas
  • No coarse grits for shaping
  • Sponges cannot level flats
  • Large pack if you only need a few grits

EAFBAO 50-Piece Sanding Sponge Assortment 180 to 3000 Grit: what owners report

Owner coverage for this product comes from retailer review pages and owner discussion; the points above are paraphrased, not quoted, and no star rating is reproduced here.

EAFBAO 50-Piece Sanding Sponge Assortment 180 to 3000 Grit: who should not buy

Do not buy this pack for filler shaping or heavy material removal. Start with the 3M block or a coarse sponge set, then finish here.

EAFBAO 50-Piece Sanding Sponge Assortment 180 to 3000 Grit: pair it with

Pair it with a coarse-to-medium set for the shaping stages.

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Keep fine sponges separate from coarse ones so stray coarse grit never contaminates a finish stage.

Spec comparison

Spec3M block kitDura-Gold contourINBOF spongePukamam spongeEAFBAO sponge
TypeRubber blockFoam contourSpongeSpongeSponge
PiecesKit12 blocks12 sponges24 sponges50 sponges
Grit range12060-60060-22080-3000180-3000
AttachmentPaperHook-and-loopBuilt-inBuilt-inBuilt-in
Wet usePer makerPer makerYesYesYes
Part number9248NADUR HB-BS-12INBOF 12-packHMS24PZHLDMSZ-HZ
Best forFlat blockingCurvesValue finishFull rangeFine finish
LimitationOne gritSmall blocksSmall sizeNot for levellingNo coarse grits
Weight classSolidLight foamLightLightLight
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Scores in this guide are editorial judgement based on published specifications and paraphrased owner reports, not test results.

Fitment and use basics

Start with the coarsest grit the stage needs, not the coarsest grit in the box. Shape filler with coarse grit on a firm block, level primer with medium grit, and finish with fine grit on a sponge or contour block. Skipping grits leaves scratches that fine paper cannot remove, so step through the range.

Keep the block flat on flat panels and let the sponge or contour shape follow curves. Rocking a flat block digs grooves, and pressing a foam block hard flattens its profile. Rinse wet-sanding blocks often, and blow or wipe dust from dry work before moving to a finer grit.

For restoration panels, work in sections and check progress with a straightedge and raking light. Related reading: our sanding-block alternative guide and heavy-duty sanding-block guide linked below cover DIY options and furniture-scale work.

Safety essentials

  • Wear eye protection and a dust mask; sanding dust irritates lungs and eyes.
  • Wet sand where practical to control dust on primer and clearcoat.
  • Keep hands clear of sharp panel edges and trim clips.
  • Never sand lead-based paint without proper precautions and local rules.
  • Rinse sponges away from drains used for drinking water.
  • Store abrasives dry so grit stays bonded to the sponge or paper.

Dura-Gold Premium Wet or Dry Sandpaper 50 Sheets — A 50-sheet paper refill spanning 150 to 3000 grit for blocks that take plain paper, including the 3M block.

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QINK ROLMIL 16-Piece Contoured Sanding Pad Kit — Sixteen assorted contoured pads with hook-and-loop fixing for profiles the 12-piece set does not cover.

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3M Extra Large Area Sanding Sponge Medium — A large 3M sponge for broad finish areas where small sponges slow the job down.

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See also our accessory guides: sanding blocks by reviews, sanding block DIY alternatives, and the sanding blocks archive

Troubleshooting

SymptomLikely causeFix
Scratches show through paintSkipped grits in progressionStep back one grit and rework the panel
Block digs groovesRocking the block on flatsKeep block flat; use lighter pressure
Paper peels offWrong attachment systemMatch paper to block: hook-loop or plain
Edges round overSoft block pressed hard on edgesUse a firm block near edges; lighten pressure
Dust clogs paperDry sanding without cleaningRinse or blow paper often; wet sand where suitable
Sponge tearsCoarse work on a fine spongeUse coarse grits for shaping, fine sponges for finishing

Who should NOT buy these

Do not buy one block for every surface. Flat panels, curves, and edges need different blocks, and one compromise block does all three badly. A firm block plus a contour or sponge set covers real cars. See our sanding blocks by reviews for the wider field.

Do not buy fine grits to fix coarse mistakes. Fine paper cannot remove deep scratches efficiently, so a skipped grit stage wastes more time than it saves. Step through the range, even when you are impatient. See our seat upholstery kits archive.

Do not buy sponges for levelling. Sponges finish beautifully but follow every dip, so they cannot level filler. Levelling is a firm-block job; sponges come after. See our automotive wiring kits archive.

Do not buy on piece count alone. Fifty fine sponges help nobody shaping filler, and twelve coarse sponges help nobody polishing clearcoat. Match the grit bias to your stage of work. See our trim restoration products archive.

Final verdict

Best Overall: 3M Sanding Block Kit 2.75 x 5.25 Inch — the classic first block Check Price

Best Contours: Dura-Gold 12-Piece Contoured Profile Hand Sanding Block Set — the curve-work set Check Price

Best Value Set: INBOF 12-Pack Sanding Sponge Assortment — the value starter set Check Price

Best Grit Range: Pukamam 24-Piece Sanding Sponge Assortment 80 to 3000 Grit — the full-progression box Check Price

Best for Fine Finishing: EAFBAO 50-Piece Sanding Sponge Assortment 180 to 3000 Grit — the fine-finishing pack Check Price

FAQ

What grit sanding block should I start with?

Start with the coarsest grit your stage needs: coarse grits around 60 to 80 shape filler, medium grits around 120 to 220 level primer, and fine grits from 320 upward prepare for paint. Skipping stages leaves scratches, so step through grits rather than jumping.

Are sanding sponges better than blocks?

Neither is better in general: firm blocks level flat surfaces, while sponges follow curves and wrap edges. Most bodywork needs both, with the block for levelling and the sponge for finishing. Buying only one type forces compromises on real panels.

Can I wet sand with a foam sanding block?

Most EVA foam blocks and sanding sponges tolerate wet sanding well, and wet work controls dust and extends paper life. Rinse the block and paper often so trapped grit cannot scratch, and check the maker guidance for your specific block.

What is the difference between hook-and-loop and plain paper blocks?

Hook-and-loop blocks grip paper with a loop backing for fast grit changes, while plain-paper blocks wrap or clamp standard sheets. The systems are not interchangeable, so buy paper to match your block type.

How do I sand a curved panel without flat spots?

Use a contoured foam block or a sponge whose shape matches the curve, and let the block follow the panel with light pressure. Pressing hard flattens foam and creates flat spots, so check progress often with raking light.

How long does a sanding sponge last?

A washable sponge lasts through several sessions if rinsed and stored dry, but coarse work wears any abrasive faster. Replace sponges when the grit feels smooth or the sponge tears, because a worn sponge cuts unevenly.

Do I need a long board block for car bodywork?

Long boards level large panels fastest and suit professional blocking, but they tire the hand on small work. Most home restorers manage with a mid-size firm block plus a contour set, reserving long boards for hoods and doors.

Can sanding blocks be used on wood and drywall too?

Yes, the same blocks and sponges work on wood, drywall, and metal, with grit choice following the material. Keep separate sets for paint work and rough work so coarse grit never contaminates a finish stage.

What does the WooCommerce wording in this title mean?

Nothing about the product: it is a keyword artifact from the source list, not a feature of sanding blocks. This guide reviews the blocks themselves, their shapes, grits, and uses for auto bodywork.

Sources

By Leo, Founder, WinchInsider

Leo writes research-based buying guides for automotive, towing, and workshop gear, built from maker specifications and owner reports rather than lab claims.

Related guides

Top pick: 3M Sanding Block Kit 2.75 x 5.25 Inch

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