2pcs Diamond Disc for Plaster Cutting 45mm x 0.30mm Disk Wheel Dental accessories: divide,separate,fabricate,contour,shape of dental restorative materials; for ceramic, gold, steel, etc. Shank-HP, 2.35mm(3/32") diameter 1 pc/paper bag for unmounted. Moulded Shape - Cb Usage - sieve disc; for separating and contouring of ceramics, acrylics and plaster; flexible, with good vision result; high material reduction and smooth grinding performance; Suggested RPM - 8,500 RPM