The Bosch TC6005 3/16-inch x 5-1/2-inch Drill Bits - 5 Pack is part of Bosch"s concrete screw and anchoring system and is the perfect fit for your concrete and masonry needs! Electricians, plumbers and remodelers are using these systems every day when fastening screws into brick, concrete and block for superior results. Features: * Single flat prevents slippage * ANSI Compliant ensures correct hole sizes for fast drilling in hard materials * High-quality carbide tip for long life * Common applications include conduit, electrical boxes, pipe straps, HVAC strapping, sign fastening, window frames, backer boards What"s In The Box: * Bosch TC6005 3/16-inch x 5-1/2-inch Drill Bits - 5 Pack