Feature 1, This product can protect the wheel hub screws. 2, It can lock the wheel nut and is easy to use. 3, High quality aluminum alloy and engineering plastics, high hardness and corrosion resistance. 4, It is suitable for impact tools, perfect replacement for old or broken one. 5, It can be used for auxiliary disassembly of all 17mm, 19mm, 21mm hub screws.Features: This product can protect the wheel hub screws. It can lock the wheel nut and is easy to use. High quality aluminum alloy and engineering plastics, high hardness and corrosion resistance. It is suitable for impact tools, perfect replacement for old or broken one. It can be used for auxiliary disassembly of all 17mm, 19mm, 21mm hub screws. Specification: Condition: Brand New Color: Shown as Picture Material: Aluminum Alloy + Engineering Plastic Size: Approx. 12.5 x 82mm/0.5 x 3.2in Protective Sleeve Length: Approx. 58mm/2.3in Hexagonal Socket Size: Approx. 17mm/0.67in, 19mm0.75in, 21mm/0.83in Package List: 3 x Wheel Nut Sockets