1. Rubber material, lightweight and flexible, easy to install 2. Convex and non-slip pattern design on the surface, stronger grip 3. Anti-vibration and explosion-proof, easy to cope with various road surfaces 4. Good confidentiality, anti air leakage 5. Weight: inner tube about 130g, outer tube about 630g 6. Size: about 21.5 x 6.2cm
