VEVOR 3/8" Drive Impact Socket Set, SAE 1/4"-3/4" and Metric 6-19mm 90 Piece Socket Set, 6 Point Cr-Mo Alloy Steel for Auto Repair, Includes Extension Bars Universal Joint Adapter Lock Storage CaseThe impact socket set, made from Cr-Mo industrial-grade alloy steel, undergoes heat treatment processes such as high-temperature quenching and low-temperature forging, resulting in a hardness level of HRC42-48.With a pro configuration of 90 pieces, this set can be used with electric wrench, impact wrench, ratchet wrench, rod bender, and other tools for automotive maintenance, equipment assembly, industrial manufacturing, power inspections, and more.The hexagonal socket design creates a gap between the nut and the edges during operation, preventing excessive friction and wear. It can withstand greater impact force and effectively remove bolts.Using laser etching and rolling processes, the extra-large size markings on the sockets are clear and easy to identify even under various lighting conditions. The markings are also resistant to wear.The split-strengthened case ensures durability and is less prone to breakage compared to traditional one-piece storage. The portable design allows you to easily carry it for work on the go.The set includes extension bars in four sizes: 3", 6", 10", and 15". Even for hard-to-reach nuts in deep areas, these extension bars make it easy to complete the task.Deep Sockets:1/4", 5/16", 3/8", 7/16", 1/2",9/16", 5/8", 11/16", 3/4",Extension Bar: 3", 6", 10", 15",Material: Cr-Mo Alloy Steel,Adapter: 1/2" - 3/8",Hardness: HRC42-48,AD Adapter: 1/4" - 3/8",Swivel Stand Impact Socket: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4",Product Size: 18.5 x 2.4 x 15.4 in / 470 x 60 x 390 mm,Impact Sockets Set: 90 Pieces,Item Model Number: YX7982002,47mm Bit Socket: T20, T25, T27, T30, T40, T45, T47, T50, T55,E Type Socket: E5, E6, E7, E8, E10, E11, E12, E14, E16,Net Weight: 20.7 lbs / 9.4 kg,Universal Joint: 3/8",Standard Sockets: 1/4", 5/16", 3/8", 7/16", 1/2",9/16", 5/8", 11/16", 3/4"