The MAXIMUM SQ0 Square Screwdriver Bit, 1-in, 2-pk, is a useful and versatile accessory to assist you in various projects. From metal and plastic to masonry material, this carbide drill bit is ideal for drilling anything you need. This square screwdriver bit is designed for impact drivers and drills and stays tightly in place when the screwdriver fastener gets turned around. The square screw bit has a square recess to increase the connection of the screw bit to the screw head. The tight point of contact between the driver bit and the screw head resists cam-outs. This square-head driver bit features a torsion zone to absorb impact and withstand the high levels of torque needed in impact drivers. Made from high-quality material and coated with a black oxide finish, this drill bit offers added durability and rust resistance. The package includes two top-grade driving drill bits and each bit is 1 inch in length.