Item Name: Locking System Receiver Heavy Duty Tow Towing Hitch Lock Trailer Hitch Lock Pin. Surface treatment: spray paintPurpose: Prevent theftScope of application: RV Truck Trailer RV Construction Vehicle CamperColor: Black100% Brand New And High QualityMaterial: Zinc AlloySpecification:Features:Load Rating: 5 / 8 inch pin maximum rated load rating III / IV: 10,000 lbs.Made of high quality solid carbon steel for safety.No need to drill or install, just slide the pin and lock it.The weatherproof cap protects the keyhole from water and dirt while keeping the lock free of rust. Note: 1.Please allow 0-1cm error due to manual measurement.