Features and Benefits:

• Set contains deep length fractional sizes 5/16" to 1" and metric sizes 8mm to 22mm plus a 3" extension
• 3/8" x 3/8" universal joint and 1/2" F x 3/8" M adapter
• Made from high quality chrome-molybdenum steel
• Size markings are hard stamped into the socket for easy identification
• Packaged in a blow molded storage case

3/8 in.; Drive 29-Piece Deep Fractional SAE/Metric Set. 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.