FITMENT - 1PC 6 point spline lug nut socket key tool replacement for M12x1.5, M12x1.25, 1/2-20 threads pitch spline lug nuts. This 6-spline socket key is only compatible with 17mm replacement hex socket. SPECIFICATION - Black 6 point spline socket is 17.6mm inner diameter and 20.5mm outer diameter, overtall - 3" (76mm), depth - 1.78" (45mm), 6 splines points. Meets or exceeds OEM factory standards. MATERIAL- Electrophoretic paint provides exceptional appearance and corrosion resistance, cold forged and heat treated steel (anti-rusting and anti-stripped, high strength and durability). ATTENTION- It is recommended that you check the user manual to understand the required spacification of the nuts socket.