Genesis GIW3075K 7.5-Amp 1/2-Inch Impact Driver Kit with Detent Pin Anvil, Grey/Green 1/2-in detent pin square drive anvil 220 ft-lbs of powerful torque in forward and reverse Die-Cast Aluminum Housing for tremendous durability Rocker Style Switch for strong nut-busting action Includes Four Heavy-Duty Sockets: 11/16-in, 3/4-in, 13/16-in and 7/8-in.