DAMO 2-1/2 inch Diamond Core Drill Bit for Porcelain, Ceramic, Tile, Quartzite, Granite, Marble, Stone & Brick, Hole Saw 64mm

Diameter 2-1/2", Max. drilling depth 2"; | 5/8"-11 thread fits on most popular high-speed grinders; | Dry or wet use. Wet drilling is always recommended for enhanced cooling and effective dust control; | Vacuum brazed technology prevents chipping of stone and ensures aggressive drilling; | Max. speed 11,000 RPM.