IEY1683 Features: * 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 3/8"" or larger chucks * 3-3/4"" overall length * 250 max rpm * Carded Dimensions: * 1/2"" diameter