Protect your trailer, RV or boat with a heavy-duty coupler lock that stops theft and prevents unauthorized access. Key benefits Strong theft protection: Solid high-grade steel construction provides a robust barrier against tampering and brute-force attacks, giving you greater peace of mind. Secure, custom fit: An adjustable hook locks to a wide range of trailer and RV coupler sizes to ensure a tight, reliable fit during travel or storage. Weather-ready durability: A rust- and weather-resistant coating keeps the lock functioning outdoors year-round without compromising security. Simple, reliable operation: High-security keyed lock with two keys included for convenience and controlled access. What it does for you Prevents your trailer, caravan or boat from being hitched and stolen. Keeps stored vehicles secure at home, work sites or marinas. Reduces the risk of unauthorized use when parked at campsites or public areas. Features and performance Material: Heavy-duty steel body for maximum strength and long service life. Locking: High-security locking mechanism designed to resist picking and tampering; two keys included. Compatibility: Adjustable hook design fits a wide range of trailer, RV and coupler sizes for flexible use. Durability: Corrosion-resistant finish designed to withstand rain, snow and outdoor exposure. Practical use scenarios At home storage: Lock your trailer or boat when stored on the driveway or in a yard to deter opportunistic theft. On the road: Secure your RV or trailer during overnight stops or when parked at campgrounds to prevent unauthorized hitching. At work or marina: Keep equipment and trailers safe at job sites and marinas where unattended vehicles are vulnerable. Trusted, no-nonsense security you can rely on: a durable steel coupler lock with adjustable fit, weather resistance, and a high-security keyed mechanism with two keys included.