The TCL65 is a deluxe wheel chock lock that can help you achieve maximum security quickly and easily for all unattended trailers, cars, boats, and more. Made of heavy-gauge powder-coated steel with a strong pick-resistant locking mechanism. Provides 6-inch opening when locked, a 10.5-inch opening when unlocked, and has a reach of 7.25-inch. Includes 3 keys.