Trailer Hitch Lock with Keys Versatile compatibility: fits 17/8 in, 2 in, and 25/16 in trailer couplers, making it suitable for most common hitch sizes used with trailers, boats, campers, and RVs. Strong security for valuable assets: provides a reliable lock to prevent unauthorized coupling and deter trailer theft when you park, store, or transport your gear. Easy installation and removal: lock comes with keys for quick access; simply insert keys to secure or release the lock. Adjustable fit for a snug hold: tighten or loosen the lock by turning the key to ensure a proper fit on your trailer hitch. Durable, weather resistant construction: lock cylinder is made from brass and zinc, offering corrosion resistance and longterm durability in harsh outdoor environments. Practical use scenarios: At campgrounds or storage yards, secure your trailer hitch when not in use. At marinas or boat ramps, protect boat trailers while loading, unloading, or parked overnight. During road trips or longhaul transport, quickly lock and unlock as you stop and resume travel. Key attributes at a glance: Function: trailer coupler locking with keys Compatibility: 17/8 in, 2 in, 25/16 in couplers Size: universal within the stated coupler sizes Material: brass and zinc lock cylinder Performance: rustresistant, durable in harsh environments