3" x 21" Sanding Belts, 12 PACK
3" x 21" Sanding Belts, 12 PACK
3 × 21 sanding belts. 12 belts in one selected material and grit per pack. Choose Cloth A/O, Zirconia or Ceramic for the work; grit options vary by material.
Compare materials, grits and fitAvailable in stock (49982)
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Choose your 3 × 21 sanding belts
Start with Cloth A/O for woodworking and compare Zirconia or Ceramic for metal removal. Cloth A/O also offers the finer grit choices on this product. Match the belt to your machine and work material.
Check fit before ordering
These belts are 3 inches wide with a 21-inch total loop length, for sanders that specify 3 × 21 belts. A 3 × 18 or 3 × 24 belt is a different size.
| Machine model | Manufacturer-listed belt size |
|---|---|
| Makita 9903 | 3 × 21″ |
| Craftsman CMEW213 | 3 × 21″ |
| BLACK+DECKER DS321 | 3 × 21″ |
| Bosch 1274DVS | 3 × 21″ |
| PORTER-CABLE 352VS | 3 × 21″ |
| DeWalt DW433 | 3 × 21″ |
| Metabo HPT SB8V2 | 3 × 21″ |
| BAUER 57587 (20103E-B) | 3 × 21″ |
These are belt-size references. A matching size does not approve every abrasive or work material. Follow the exact model manual; some woodworking sanders prohibit metal or wet sanding.
Match both numbers in your machine manual. Follow the machine manufacturer’s instructions for installation, tracking, operating speed and dust collection.
What is in a pack?
Each pack contains 12 belts in one selected material and grit. It is not a mixed-grit assortment. Select separate packs when you need more than one grit.
Plan the next sanding step
Use the coarsest grit needed for the task, then refine its scratch with progressively finer grits. Test the sequence on scrap. Follow the coating or finish manufacturer’s instructions for the final grit.
Compare materials and grits
Material and grit combinations vary. The table lists catalog variants; the selector above shows current availability and price.
| Material | Grit options |
|---|---|
| Ceramic | 24 Grit, 36 Grit, 40 Grit, 60 Grit, 80 Grit, 120 Grit |
| Zirconia | 24 Grit, 36 Grit, 40 Grit, 60 Grit, 80 Grit, 100 Grit, 120 Grit |
| Cloth A/O | 24 Grit, 36 Grit, 40 Grit, 60 Grit, 80 Grit, 100 Grit, 120 Grit, 150 Grit, 180 Grit, 220 Grit, 320 Grit, 400 Grit, 600 Grit, 800 Grit |
Before you order
Will this belt fit my sander?
These belts are 3 inches wide with a 21-inch total loop length, for sanders that specify 3 × 21 belts. A 3 × 18 or 3 × 24 belt is a different size.
How many belts come in a pack?
Each pack contains 12 belts in one selected material and grit. It is not a mixed-grit assortment. Select separate packs when you need more than one grit.
Does every material come in every grit?
No. Each material has its own grit options. Compare the material-and-grit table, then use the selector for current availability and price.
Which 3 × 21 sanding belts should I choose for wood?
Start with Cloth A/O, the aluminum oxide option on this product. Select a grit for the amount of removal and the next finish. Zirconia and Ceramic are also offered for suitable metalworking applications; options vary by grit.
Can I use these belts for wet sanding?
Confirm wet-use suitability with Maverick for the exact belt specification and check the machine manual. Do not assume these belts or an electric belt sander are approved for wet use.
What if I need a different belt size?
Choose a product that matches both your required width and full loop length. Browse all sanding belt sizes or request a custom size; confirm the specification and current terms with Maverick.

