Feature: 1. Made of high-strength steel, it is coated with black electrophoretic paint to prevent corrosion. 2. Good tool to help you prevent theft. 3. Good choice to replace your old or broken coupler lock. 4. How to use: Spin the flat key 5-7 times to open or close the hitch lock. 5. Wide applicaiton: Can be widely used in RV, truck, boat, trailer, car, camper van, etc. Specification: Features: Made of premium quality zinc alloy, it is coated with black electrophoretic paint to prevent corrosion. Good tool to help you prevent theft. Good choice to replace your old or broken coupler lock. How to use: Spin the flat key 5-7 times to open or close the hitch lock. Wide applicaiton: Can be widely used in RV, truck, boat, trailer, car, camper van, etc. Specifications: Color: Black Material: Zinc Alloy Condition: New Package Size: 7.87 * 5.59 * 3.81cm/‎3.1 * 2.2 * 1.5inches Package Weight: 162g Package List: 1 * Coupler Lock 2 * Keys Package List: 1 * Coupler Lock 2 * Keys