Irwin Impact Concrete Screw Installation Bits 3/16"X 4", 2-3/8 In L Flute Brand_Hillman you will receive a single

you will receive a single key blade

and residential applications

No need for pressure tank

bit diameter 3/16"

Irwin Impact Concrete Screw Installation Bits 3/16"X 4", 2-3/8 In L Flute Brand_Hillman you will receive a singleBuilt in hex collar for Tapcon* screws or other concrete screws, serves as a stop feature for drilling the perfect hole depth 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" quick change shank is designed to work with impact drivers, and reduces slipping in standard drill chucks