Keeping in mind that prevention is better than cure， the CURT Dogbone With Span Coupler Lock is the ultimate security solution for your tow vehicle. It features a hitch lock that is designed to hold a ball mount or hitch-mounted accessory in place. Also， the like-keyed locks for single key operation makes it is easy-to-operate. The CURT Dogbone With Span Coupler Lock has a chrome-plated finish that imparts durability while its water-tight dust caps prevent internal corrosion.FeaturesHigh strength to keep ball mount firmly in placeSingle key operationEasy and convenient to useDurableChrome-plated finishAvoids internal corrosionIncludes four keysSpecificationsContents:Four keys for added convenienceReceiver Tube Size: 2"Weight: 1.5 lbApplication: AutomotiveDiameter: 5/8"Finish: ChromeType: Dogbone Hitch Lock