GC - 5pc 7/8" Diamond Cut Off Wheel Disc Saw Set 1/8" Shank + Mandrel 150 GritUS FASTPER Shank: 1/8'', Disc Diameter: 7/8'', Thickness: 0.031" Medium grit for cutting or sanding stones and glass Preforated for cooler cutting. Designed for Rotary Tools Includes 5 discs, 1 shank and a plastic storage case