Irwin Impact Concrete Screw Installation Bits 3/16" X 5" O'Keeffe's 2-7/8 inch x 4-1/16 inch

2-7/8 inch x 4-1/16 inch plate

Seals between bottom of door and threshold to block out air and moisture

Premium airflow allows for better operating efficiency and low energy consumption

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Irwin Impact Concrete Screw Installation Bits 3/16" X 5" O'Keeffe's 2-7/8 inch x 4-1/16 inchBuilt 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