1. Material: aluminum alloy 2. Applicable models: universal 3. Metal material, not easy to corrode, strong antioxidant ability 4. Waterproof design, no rust 5. Sealing rubber ring, can prevent air leakage 6. Knob installation, simple and durable 7. Frosted surface design, to prevent mud and sand from entering the tires and at the same time beautiful 8. Size: 19 x 11mm 9. Weight: 30g/set
