Non-Marring Lug Nut Socket Set 3pcs 1/2" TOTAL THMLNS031Size 1/2inchMax head size 21 mmQuantity in a set 3pcsHead fit sizes 17mm, 19mm, 21mmMin head size 17 mmChromium-molybdenum alloy steel (Cr-Mo)Non-Marring Lug Nut Socket Set is used for mounting / dismounting of light-alloy wheel rims of ca..