Motion Pro LiteLoc II Rim Lock The LiteLoc II Rim Lock boasts a high-strength nylon composite body, meticulously molded for durability and impact resistance while maintaining a lightweight design. Features: Precision molded body made from high-strength nylon composite Thermoplastic polyurethane cover increases shock absorption and protects against pinch flats Super light and impact resistant Includes Motion Pro aluminum LiteLoc rim lock nut and beveled washer Unique angled and tapered ribs lock tire securely to rim Recommended tightening torque on nut is 10 lb/ft Patented design Note: Select proper size based on your wheels rim width.