Durable materials: Crafted from aluminum alloy and sturdy copper to deliver durable, reliable security and peace of mind. Special fit and adjustable design: Features an adjustable design and a ratchet mechanism to achieve a secure, precise fit every time and simplify setup. Wide application and compatibility: Suitable for 17/8 inch, 2 inch and 25/16 inch connectors, providing widely used and adaptable safety for all your towing needs. Maximum protection and visibility: Includes advanced theftprevention features and bright colours to deter theft and increase visibility for your trailer. Use scenarios Parked security: Use when leaving your trailer unattended at campgrounds, storage facilities, or roadside stops to deter theft and protect your investment. Hitching and unhitching: Employ during hitching or unhitching to maintain a secure connection and reduce the risk of tampering while you set up or break camp. Fleet and rental trailers: Ideal for fleets or rental operations that require compatibility across common hitch sizes (17/8 inch, 2 inch, and 25/16 inch) for quick, reliable protection.