- 3M Trizact technology delivers consistent, superior results | Number one choice of metalworkers worldwide
- Excellent for sharpening steel knives | Ideal for finishing soft metals (Copper, Aluminum, Brass, etc.) | Also great for fine finishing of hard metals (Stainless Steel, Carbon, etc.)
- Pyramid shaped aluminum oxide abrasive breaks down under pressure, exposing fresh, sharp cutting surfaces as it wears
- Durable, full flex, JE Weight Rayon cloth backing easily conforms to contoured surfaces
- Grinding aid reduces heat buildup | Resin bonded | Dry applications
12 Packs contain 4 of each grit.