Dewalt Maxfit Ultra Screwdriving bits help maximize your Dewalt power tool system. Featuring an Anti-Snap design, Maxfit Ultra Screwdriving Bits are reengineered to deliver up to 800 more screws. Each bit features a precision-machined tip for ideal fit in screw head recesses, resulting in fewer stripped screws. The bits feature a 1/4 in. Hex Shank is designed for use with Impact Drivers and is compatible with power drills.