Chrome molybdenum sockets, hardened, tempered and anodised for corrosion resistance. Nylon sleeves and inserts protect wheels and nuts. Colour-coded sockets for easy size selection. Suitable for use with impact tools. Includes sizes 17, 19 and 21mm in tough storage case. Chrome molybdenum sockets, hardened, tempered and anodised for corrosion resistance. Nylon sleeves and inserts protect wheels and nuts. Colour-coded sockets for easy size selection. Suitable for use with impact tools. Includes sizes 17, 19 and 21mm in tough storage case.