Features 1、10 PCS SET: The pack contains 10 pcs impact sockets, respectively 10mm, 12mm, 13mm, 14mm, 15mm, 17mm, 19mm, 21mm, 22mm, 24mm. 2、1/2 INCH INTERFACE: The pneumatic socket adopts 1/2 inch female hex screw interface, suitable for most of electric tools. 3、HIGH STRENGTH: Made of high strength impact grade chrome vanadium steel, the socket can withstand the increased torsion of impact tools. 4、SURFACE TREATMENT: Advanced black oxide surface treatment provides maximum rust and corrosion protection for the wrench socket. 5、WIDE USAGE: The socket set is suitable for electric wrench, pneumatic drill, torsion wrench, ideal for home repair, auto repair, industrial assemble. Specification Item Type: 1/2 Socket Set Material: Chrome Vanadium Steel Socket Interface: 1/2in Socket Length: Approx. 7.8cm/3.1in Socket Model: Approx. 10mm/0.39in, 12mm/0.47in, 13mm/0.51in, 14mm/0.55in, 15mm/0.59in, 17mm/0.67in, 19mm/0.75in, 21mm/0.83in, 22mm/0.87in, 24mm/0.94in Package List 10 x 1/2 Socket Set (10mm to 24mm)