3/8" Drive x 21mm Deep - 12 Point GRE1121MD Grey Pneumatic

3/8" Drive x 21mm Deep Length 12-Point Impact Socket.  Our impact sockets grip the fastener across a broader contact area, reducing chance of rounding off fasteners.  They also allow up to 20% more torque to be applied than on other impact sockets.  The shift in pressure allows us to reduce the socket wall thickness, increasing access to tight areas.