SPECIFICATION: 20mm Inner Diameter - Compatible with 21mm (13/16) and 22mm (7/8) Replacement Hex Socket|MATERIAL: Electrophoretic paint provides exceptional appearance and corrosion resistance, cold forged and heat treated steel(anti-rusting and anti-stripped, high strength and durability)|SPECIAL COATING: provides exceptional appearance and corrosion resistance. Manufactured from cold forged steel that can withstand much more force than the torque needed to secure the nuts on your vehicle|MORE THAN NUT SOCKET TOOL: We go above and beyond to provide the highest quality wheel lug nut socket tool and top notch customer service. Contact us and we will give you a satisfactory answer within 24 hours|NOTES: Please double check your lug nut dimensions before purchasing, this only works for 7 point spline lug nuts with 20mm Inner Diameter