Description Grey Pneumatic sockets are designed for professional tool users. Made of high quality alloy steel. Engineered specifically for use with impact tools. Benefits of the GP Impact Socket ?High Torque? drive: Increased strength, easier access to tight areas, and reduced wear. A set of four (4) thin wall ''flip'' style impact sockets that have two different hex sizes in each socket. Sockets are designed for auto and light truck wheel fasteners. Use with 1"2'' drive extended shank impact tools or regular shank impact tools with an extension. 3"4'' x 1"/1"'' (23"6D) 1"mm x 21"m (23"2D) 7"8'' x 1""1"'' (23"9D) 1"' x 1"1"1"'' (23""D) All items in this set carry the GP Lifetime Warranty.