ITEM NAME:3 Pcs 1/2 inch 17mm 19mm 21mm Alloy Thin Wall Wheel Nut Deep Impact Socket Z3A1 3 Pcs 1/2 inch 17mm 19mm 21mm Alloy Thin Wall Wheel Nut Deep Impact Socket Z3A1 100% Brand new and high quality. 2.Protects car wheels & bolts against damage. 3.Protective material is Teflon, not plastic. 4.Corrosion: hardened, tempered and anodized 5.Hard wearing nylon sleeves on the outside of the sockets protect the wheels Size:1/2 inch Drive,They are 17mm,19mm,21mm Teflon Protective Wheel CR-MO Socket Each length:77mm Material: Alloy Color: Blue Weight:746g Equipped with a convenient storage box Note: Instruction is not included. Package included:(3PCS) 1 x 1/2 inch 17mm Teflon Protective Wheel CR-MO socket 1 x 1/2 inch 19mm Teflon Protective Wheel CR-MO socket 1 x 1/2 inch 21mm Teflon Protective Wheel CR-MO socket Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..Material: Alloy. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. Color: Blue.