The Apex AN-4MM-5PK Power Bit is the ideal tool for power screwdrivers.
Ideal for use with power screwdrivers, they also work well with pneumatic drills and drivers. This 5 pack of 7/16" hex shank power bits are designed to fit most standard drill chucks.With its hex shank, it fits most standard drill chucks. Made from S2 steel, these fastening tools are strong and durable.