Grey Pneumatic SOC 21MM 3/8D IMP 12PT DP BLK

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.