Drill bit, Smooth accurate drilling in glass, tile, marble, china, and mirrors, Spear-pointed tip design reduces breakout, Ideal for drilling fastener holes in bathroom tile or wall mirrors, Carbide-tipped for long life, Fits drills with , 38"" or larger chucks, 38"" diameter, 3-, 75"" overall length, 350 max rpm, Length: 1, 9, Width: 6, 4, Height: 1, 1 SKU: JNSN24537