Features: The trailer hitch coupler lock is made of high-quality strength steel to deter theft and coated with a coating preventing corrosion.The trailer hitch coupler lock provides customers a safe and Convenient environment by fixing the coupler on the trailer, RV, boat,truck, and also fixing trailer latches, cargo boxes and other types of doors. Trailer Hitch lock is made of high-quality carbon steel and adopts advanced anti-theft technology to provide you with reliable security. The material is strong and does not bend easily. Our trailer hook padlock is made of high-strength steel. The surface of the lock has a coating to prevent rust. The hook design can be used for anti-theft. The Trailer Hitch Coupler Lock is easier to install by simply connecting it to the tie bar and locking it, you only need to rotate the key 1/4-turn to open or lock so that you can easily complete the installation. For convenience, this trailer hook includes two keys, you can put one of them in a safe place for backup. Also, the trailer hitch locking pin is relatively small and easy to carry. Package Includes: 1x Trailer Hitch Lock Specifications: Material:Zinc Alloy Size:Approx.4.39x4.59cm/1.73x1.81inches Color:Black note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.