CMT 552-789 Diamond Dry Hole Saw 3-1/2" x 5/8" x 2-3/8"The CMT 552 789 is a 3 1 2" (89mm) Diamond Dry Hole Saw For Angle Grinder (M14 Spindle). Designed for cutting hard tiles (ceramic, gres), hard stones (granite, marble), and artificial stones. Diamond grit with cubo octahedral crystals provides fast, clean cutting and longer life than standard hole saws. SPECIFICATIONS Diameter 3 1 2" (89mm) Cutting Depth 5 8" Overall Length 2 3 8" Blade Material Diamond Grit Coated Shank M14 spindle for angle grinder