Features and Benefits:

• Extra deep length 6-point impact socket
• Over 4-3/8" bolt clearance depth
• Made from high quality chrome-molybdenum steel
• Heat treated for strength and durability
• Size markings are hard stamped into the socket for easy identification

1/2" Drive x 21mm Extra-Deep 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.