IRWIN 9-Piece Carbide Masonry Drill Bit for Rotary Drill/Impact Driver

Built-in hex collar serves as a stop feature for drilling the perfect hole depth for Tapcon screws and other concrete screws. Drill/drive installation sleeve slides over bit and engages with hex collar to quickly drive hex or Phillips® head fasteners. One-piece construction withstands higher torque loads than standard quick-change bits. 1/4-In quick-change shank is designed to work with impact drivers, and reduces slipping in standard drill chucks.