Industrial quality impact driver with switchable forward and reverse screwdriver rotation. When the impact resistant handle is struck with a hammer the downward force is converted by the impact driver’s internal mechanism into a powerful high torque screwdriver rotation action. Ideal for ensuring fasteners are securely tightened and for freeing stuck fasteners. Hex drive nose pieces can be removed to allow use with 1/2” square drive impact sockets. 5-Piece Set To suit 5/16” hex and 1/2” square drives. Complete with: Crosspoint: No.2 and 3. Flat Bits: 8 and 10mm.