Hello, Could we apply this product for metal surfaces? For example, bolts/screws, pins and nuts, screws or bolts with self-locking nuts or nut-plates.

I used it for ho train track and ho car track

I need a fine sponge for in between laquer gloss coats on wood projects. Would these do the trick

I used this sponge between coats of chalk paint as well as between coats of a satin sealant.

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🛠️ Sand smarter, not harder — the pro’s secret weapon!

SURFACE SAFE SANDING - No discoloration or damage—perfect for prepping wood, metal, and drywall before finishing.
ERGONOMIC FLEXIBILITY - Pliable sponge contours effortlessly to curves and corners, reaching those impossible spots with ease.
LONG LASTING DURABILITY - Outperforms conventional sponges by sanding faster and lasting longer—work smarter, not harder.
ECO FRIENDLY REUSABILITY - Simply rinse and reuse to reduce waste without compromising performance.
PRECISION 320 GRIT FINISH - Achieve ultra-smooth surfaces with premium mineral grits designed for professional-grade sanding.

The 3M 20907-320 SandBlaster Advanced Sanding Sponge features a 320-grit premium mineral abrasive on a pliable, durable sponge that conforms to surfaces for efficient hand sanding. Ideal for prepping wood, metal, and drywall, it sands faster and lasts longer than conventional sponges, with a rinse-and-reuse design that supports sustainable, high-performance finishing.

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TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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Manufacturer	3M
Part number	21916-320
Item Weight	24 g
Product Dimensions	165.1 x 66.04 x 279.4 cm; 24 g
Item model number	21916-320
Size	320-grit / fine
Colour	Yellow
Material	Aluminium
Item Package Quantity	1
Grit Number	320
Special Features	Durability
Batteries included?	No
Batteries Required?	No

3M 20907-320 Sanding Sponges

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