TRUE UNIVERSAL FIT – Designed for broad compatibility across a wide range of trailer coupler styles. The adjustable U-bolt secures around the coupler assembly, giving trailer owners another flexible fitment option. ADJUSTABLE STEEL U-BOLT – Customize the fit across different coupler shapes and sizes. The flexible U-bolt design makes it easier to secure more trailer configurations with one heavy-duty coupler lock. HEAVY-DUTY TRAILER SECURITY – Reinforced steel construction and a rugged base plate create a strong physical barrier designed to deter unauthorized trailer hookup and theft. BLOCKS UNAUTHORIZED HOOKUP – Helps prevent a tow ball from being inserted into the trailer coupler, adding visible security when your utility, boat, travel or equipment trailer is parked. BUILT FOR BROADER COMPATIBILITY – A versatile addition to the Rhino USA trailer security lineup, designed for customers who need an adjustable solution across different coupler shapes and sizes.