OGT1657 Features: * Cut fast, accurate, high quality holes * Flange stop prevents over drilling * Replaceable cobalt steel pilot drill, with split point tip design, to improve performance and resist walking: eliminates need for center punch * Cutting Diam: 7/8 in, 1 1/8 in, 1 3/8 in * Bit/Blade Mounting Size: 1/4 in, 3/8 in * Bit/Blade Mounting Type: Chuck * Applicable Materials: Aluminum, Copper, Stainless Steel, Steel * Cutting Edge Material: Tungsten Carbide * Wt.: 1.20 lb * Price is for 1 Kit