- The hardest mineral is a must for finishing materials harder than 60 Rockwell C such as thermal sprayed tungsten carbide, chrome oxide, glass, stone, chilled iron and forged steel.
- For use on Dynabrade’s Superfinisher to achieve predictable, consistent and repeatable finishes on a variety of materials.

3M 77558, Cubitron II Hookit Cloth Disc 947A, 77558, 40+ to 120+, 6 in x NH, Die 600Z, 7100232737 
