3 PCS 1/2" Dr Thin Wall Deep Socket Set (17mm/19mm/21mm)

The most popular colorful socket are treated by chromate Plastic sleeves protect the aluminum wheels from damaged. Heat treatment chamfered ends makes the sockets to attach to the nuts easily. Non-Slip design enforced the adhesion between the nuts and socket. Material and Character: Durable Cr-Mo Steel, Non-slip, high torque design. Size: Blue 17mm  with blue plastic sleeve Yellow 19mm  with yellow plastic sleeve Red 21mm  with red plastic sleeve