The Vevor trailer hitch lock kit is designed to secure 1-7/8", 2", and 2-5/16" trailer couplers for RVs, boats, and trailers. It features an aluminum alloy lock body, a carbon steel lock beam, and a prying-resistant design for dependable theft protection. The adjustable 11-position height system helps provide a secure fit across different trailer setups. Tool-free operation and included keys make locking and unlocking quick and convenient. Its rust- and corrosion-resistant finish is built to handle outdoor conditions.