Feature 1Highquality chrome vanadium steel, antirust and anticorrosion, high temperature quenching, rugged and durable, strong torsion. 2With hardening treatment, this socket improves rotation efficiency and reduces wear. 3The end of the bit with precise chamfer, which can be inserted smoothly, convenient and comfortable to use. 4The size is printed on the socket to facilitate identification, bring much convenience for you. 5Including a variety of bits with different specifications, which can fully meet your different needs.Item Type: Wrench Socket BitMaterial: Chrome-Vanadium SteelToolbox Color: BlueSquare Wrench Drive Size: 1/2 inch 12.5mm/0.49inSpecifications of Hexagonal Bits:T20-T25-T27-T30-T40-T45-T50-T55-T60-T70 (Length: Approx. 55mm/2.2in)T20-T25-T27-T30-T40-T45-T50-T55-T60-T70 (Length: Approx. 100mm/3.9in)T40-T45-T50-T55-T60-T70 (Length: Approx. 140mm/5.5in)T40-T45-T50-T55-T60-T70 (Length: Approx. 200mm/7.9in)Quantity: 32pcs/setSuitable for: 1/2 inch square wrench drive/air impact wrench/power rod, etc.Application: Household, automobile, etc. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List32 x Bits1 x Tool BoxNotePlease allow 12mm error due to manual measurement. Thanks for your understanding.