Start your vehicle and secure your hitch in the receiver with the same key using BOLTs Receiver Lock. The first time you Insert your vehicles ignition key into the lock, it permanently learns your keys contours. One-Key Lock technology eliminates the risk of losing the receiver-lock key and reduces the amount on your keychain for maximized convenience. Suitable for class 1-5 towing. Automotive-grade lock cylinder with a stainless steel lock shutter and cap to block out dirt and moisture. Solid stainless steel 5/8 pin diameter. Manufacturers limited lifetime warranty. Available: GM early, GM late, Ford, Dodge/Jeep, GM center-cut, Nissan, Toyota. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Color: Stainless Steel. Type: ATV / UTV Hitch Accessories.