Resin Fiber Sanding Disc (25 Pack)
- 4-1/2″ x 7/8″ resin fiber grinding discs, 25-pack
- Ceramic (red) for steel and stainless; aluminum oxide (brown) for aluminum and soft metals
- Rated 4.7★ by 36 verified customers
Free shipping on orders over $99 (contiguous U.S.)
Ceramic for hard metals (steel, stainless). A/O for soft metals like aluminum. From $%MIN% per 25-pack.
Pick the grain for the metal
Resin fiber discs run on a standard angle grinder with a backup pad. Our ceramic discs (red) are the pick for steel and stainless — by our published numbers they outlast zirconia discs 3–4X. The aluminum oxide discs (brown) are the economical choice for aluminum and other soft metals.
Materials & grits
Pick your material and grit
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See the picker for all options.
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See the picker for all options.
See the picker for all options.
See the picker for all options.
See the picker for all options.
See the picker for all options.
See the picker for all options.
See the picker for all options. Currently sold out: Ceramic.
Suitability
What are these belts best for?
Use them for
- Weld grinding and beveling with a backup pad
- Heavy stock removal on steel and stainless (ceramic)
- Aluminum and soft-metal grinding (A/O)
Not the right belt for
- Use without a backup pad — resin fiber discs need one
- Fine finishing — flap or conditioning discs take over
Technical details
The deeper dive
Abrasive grain on vulcanized fiber backing, 4-1/2″ diameter with 7/8″ arbor. Requires a resin-fiber backup pad.
Fits standard 4-1/2″ angle grinders with a 7/8″ arbor and a resin-fiber backup pad.
Eye protection and a properly rated respirator. We recommend a full-face respirator like this one on Amazon.
Complete the setup
Works together with
Ceramic Shredder Flap Disc
No backup pad needed — grind straight away.
Cut Off Wheels
Thin Type 1 and Type 27 cutting wheels.
Surface Conditioning Flap Disc
Blend and finish after grinding.
Questions
Resin fiber disc FAQs
Do I need a backup pad?
Yes — resin fiber discs must run on a matching backup pad for support and safety.
Ceramic or aluminum oxide?
Ceramic (red) for steel and stainless; aluminum oxide (brown) for aluminum and soft metals.
Will these fit my grinder?
Any standard 4-1/2″ grinder with a 7/8″ arbor.
What comes in a pack?
25 discs of the material and grit you select.
How long do they last?
Our published numbers put the ceramic discs at 3–4X the life of zirconia discs.
Load out the grinder
25-packs in ceramic and aluminum oxide from $17.85. Rated 4.7★ by 36 customers.