AMPLOCK U-BRG2516 Airstream RV coupler lock/trailer coupler lock (fits 2 5/16 inches coupler) Molded to fit the specific shape of your Caravan (RV) 2 5/16 inches coupler when unhitched (make sure to validate measures) 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 trailer or caravan (RV) coupler size and type, referring to pictures provided (photos are for visual reference only) or to our website www.amplock.com **