DeWALT DW2219B Nut Driver, 5/16 in Drive, Magnetic Drive, Steel

With the power to withstand up to 2000 in-lb of torque, DeWALT� socket Adapters can stand up to your toughest projects. Black oxide coated, with patented IMPACT READY� design. Fits all impact drivers. For use with 1/4 in sockets.