- 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 55583, Hookit Paper Disc 236U, P220 C-weight, 5 in x NH, Die 500X, 7100010688 
