AMPLOCK U-BRP2516 RV/trailer coupler lock (fits 2 5/16 inches coupler) Molded to fit the specific shape of your trailer or Caravan (RV) 2 5/16 inches coupler 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 trailer or caravan (RV) made with high quality materials and control and identification key system Protect your trailer or 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.us ** Over 200 000 trailers secure by Amplock Lock recommended by Canadian insurers Happy customers with peace of mind Patented mechanism with our 2 parts lock Cylinder Lock location makes it difficult to access for thiefs Swivel design to prevent vehicle traction when locked Made of American (USA) materials Mass of material of 12 pounds heavy that slow down all cutting type attempt Material absorb shock instead of breaking, the lock will fold/bump after impact Resist to torch cut and liquid nitrogen Better corrosion resistance Unpickable cylinder lock Rotative face to prevent drilling Potential of millions of key combinations (unique code for each customer) Opportunity to have additionnal keys or lock keyed alike Moulded to fit on these specific 2 5/16&#039;&#039; trailer couplers only The perfect fit to decrease any hold that thiefs can use Tight fit that secure access to the coupler Perfect protection when trailer is unhitched Push and Lock cylinder lock for an easy, quick and effective use Mechanical lock Simple to use Additionnal treatment as e-coat and electrostatic paint