The TowSmart Steel Boomerang Bent Hitch Pin protects your vehicles and valuable assets from theft. It easily secures your ball mount or hitch accessories to the receiver hitch by inserting the pin into the fastener hole once you have positioned the ball mount or hitch accessory in the receiver hitch. The hitch pin offers a patented, reversible dual diameter design that fits 1/2 In. and 5/8 In. trailer hitch receiver holes. It provides a tight and secure fit, and is made of durable materials for optimal performance. This product is not recommended to remain on vehicles for an extended period of time.