IVY Classic Industries is dedicated to producing a comprehensive, quality line of power tool accessories and hand tools. IVY Classic SDS Plus Industrial Concrete Screw Drill Bits are designed for drilling exact holes for Tapcon style concrete anchor screws in concrete, block, brick and stone. These SDS bit should be used with IVY Classic 10299 - Industrial Concrete Screw Installation Kit. The bits have a sandblasted finish with a precision ground tungsten carbide reinforced head. IVY Classic Industrial Concrete Screw Drill Bits are available in 5/32 and 3/16-inch diameters with a 7-inch length.