3/8 in. Drive x 21mm Standard
Features and Benefits:
- Standard length 6-point impact socket
- Made from high quality chrome-molybdenum steel
- Heat treated for strength and durability
- Size markings are hard stamped into the socket for easy identification
- Black oxide coated for resistance against rust and corrosion
3/8 in.; Drive x 21mm Standard Length 6-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.