Drop-forged Chrome Vanadium steel sockets with S2 steel TRX-Star* bits. Sockets heat treated and chrome plated for resistance to corrosion. Fully polished micro satin finish with knurled ring to assist gripping with oily fingers. Supplied in storage case. Features & Benefits:Drop-forged Chrome Vanadium steel sockets with S2 steel TRX-Star* bits.Sockets heat treated and chrome plated for resistance to corrosion.Fully polished micro satin finish with knurled ring to assist gripping with oily fingers.Contents: Length 48mm; T20, T25, T27, T30, T40, T45, T50, T55, T60, T70, Length 93mm; T20, T25, T27, T30, T40, T45, T50, T55, T60, T70, Length 140mm; T40, T45, T50, T55, T60, T70, Length 200mm; T40, T45, T50, T55, T60, T70.Supplied in storage case.Lifetime guarantee*.Model No. AK89001 Specifications: Model No AK89001 Brand: Premier Platinum Contents: 3/8"Sq Drive TRX-Star* Socket Bits; Length 48mm - T20, T25, T27, T30, T40, T45, T50, T55, T60, T70, Length 93mm - T20, T2