Inner Diameter: Lug nut covers inner hex width: 3/4 inch (19 mm) - heigth: 0.95 inch (24 mm) - outer diameter: 0.95 inch (24 mm), these caps perfect fit for most car wheel 3/4 inch (19 mm) hex bolts or nut. Please check the size before ordering Flexible Installation: Package includes 24PCS black lug nut covers and 1PC removal tool. Buy 20pcs and get 4pcs spare. 20pcs to install on your car, protect the nuts from corrosion. 4pcs for spare and easy replacement in case of loss or damage Nut Protection: Decorate the wheel nut for your vehicle to improve appearance, say goodbye to messy peeling paint and rusty nuts, while protecting your lug nuts from corrosion and dust Different colors to choose from to make your car exterior more beautiful Cost-Effective: Products are more sturdy and durable, effectively prevent lug nut from rusting and being scratched, cover up unsightly rust marks. Reduce the high cost of replacing expensive black nuts