AMPLOCK U-BRI2516 RV coupler lock (fits 2 5/16 inches coupler) Molded exactly to fit the specific shape of your Caravan (RV) 2 5/16 inches when unhitched Materials used by AMPLOCK provide good rust resistance for use in all climates Easy to use with AMPLOCKs push and lock system The strongest lock to secure your caravan (RV) made with high quality materials and control and identification key system Protect your caravan (RV) without worries with the best coupler lock on market **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) or to our website www.amplock.com **