Feature 1The hardened chromevanadium steel socket improves the rotation efficiency and can effectively reduces wear. 2The end of the drill bit with precise chamfer can be inserted smoothly, and the size is printed on the socket for easy access. 3It has complete anti-rust and corrosion resistance, is not easy to be damaged, and does not need to be replaced frequently. 4It is made of highquality steel, quenched at high temperature, sturdy and durable, with strong torgue. 5Package including a whole set of tool, and everything you need is provided.Item Type: Hex Bit Socket SetMaterial: Chrome-Vanadium SteelToolbox Color: BlueSquare Wrench Connector Size: Approx. 1/2in/12.5mmHex Socket Bit Specifications: H5-H6-H7-H8-H10-H12-H14-H17-H19 (Length: Approx. 55mm/2.2in)H5-H6-H7-H8-H10-H11-H12-H13 (Length: Approx.100mm/3.9in )H5-H6-H7-H8-H10-H12-H14 (Length: Approx. 140mm/5.5in )H5-H6-H7-H8-H10-H12 (Length: Approx. 200mm/7.9in )(Manual measurement may have a deviation of 1-2 mm)Fitment: 1/2 inch square wrench interface/air 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 List30 x Hex Bit Socket1 x Tool BoxNotePlease allow 12mm difference due to manual measurement.