Features: Premium Material: The trailer coupler lock is made of premium iron and aluminum alloy materials, rust-resistant and corrosion-resistant. Universal Fit: The ratchet design is adjustable, making the lock suitable for couplers measuring 1-7/8", 2", and 2-5/16". Secure Locking Mechanism: It's a strong and secure lock to prevent theft, providing added security and peace of mind when leaving your trailer unattended. Visible Deterrent: The lock's presence alone can deter potential thieves from attempting to steal your trailer. Easy to Use: Simple and straightforward locking and unlocking process. Specifications: Item Name: Trailer Coupler Lock Main Material: Iron, Aluminium Alloy Color: Black Package Information: Package Size: 16*14.5*8cm Package Weight: 850g Package List: 1 * Trailer Coupler Lock 2 * Keys