Constructed from forged and quenched chrome vanadium steel with a corrosion-resistant sandblasted finish, high hardness and durable to use. Universal 1/4’’ hex shanks fit quick-change/release and firmly lock of chucks, drill, driver and screw-gun.S The magnetic pad inside the socket holder to securely grab hexagonal nuts and fasteners for easy installation or loosening/removal.A applicable for installing in those hexagon tools, such as a pneumatic screwdriver, electric screwdriver, pneumatic drill, electric drill, manual screwdriver, and more. Can be used in household DIY, auto parts, woodworking, professional machine, professional contractor repairing. Specification: Socket Size: 8mm Hex Shank Size: 1/4-inch Total Length: 42mm / 1.65-inch Material: Chrome Vanadium Steel Finish: Sandblasting Package Content: 2 x Nut Drivers