S2 Steel bits with 3/8"Sq drive to 8mm hex drive adaptor. Chrome Vanadium steel sockets, hardened and heat treated for strength. Dual satin/chrome finish with knurled ring for corrosion resistance and extra grip - even with oily fingers. Supplied in storage case. Features & Benefits:S2 Steel bits (T15-T55) with 3/8"Sq drive to 8mm hex drive adaptor.Chrome Vanadium steel sockets (E7-E20), hardened and heat treated for strength.Half chrome/satin finish with knurled ring for corrosion resistance and extra grip - even with oily fingers.Supplied in storage case.Lifetime guarantee*.Model No. AK6191 Specifications: Model No AK6191 Brand: Premier Contents: 3/8"Sq Drive TRX-Star* Sockets; E7, E8, E10, E11, E12, E14, E16, E18, E20, TRX-Star* Bits x 8mm Hex; T15, T20, T25, T27, T30, T40, T45, T50, T55, 3/8"Sq Drive x 8mm Hex Drive Adaptor Drive: 3/8"Sq Nett Weight: 0.53kg