AMPLOCK U-TLS2516I RV Trailer Coupler Lock (fits Specific 2 5/16 inches Coupler) Protect your RV/caravan trailer with your AMPLock 2 5/16 inches coupler lock when unhitched Materials used by AMPLOCK provide good corrosion resistance for use in all climates Easy to use with AMPLOCK's push and lock system The right lock to secure your RV made with high quality materials and control and identification key system Make sure you choose the right model for your caravan (RV) coupler size and type, referring to pictures provided (photos are for visual reference only) **