2613-1318 : - Glass and tile drill bits provide smooth , true drilling in instrumentation tile, marble, china, mirrors and glass. - The spear-pointed tip reduces breakout, and the bit features a carbide tip for stretched out bit life. - These bits are thought for drilling fastener holes in bathroom tile or wall. - For with drills that have 3/8 '' or larger chucks. Of Bits : -1. Unit : - Steel. Use : - Metal. Product : - Split Point Drill Bit. : work-clothing Product Weight : -0.08 Pounds.