EVERBILT Round-Swivel Eye Bolt Snaps have various household and industrial applications, ideally used with rope, chain and straps. Some common uses include animal leashes, buckets, belt accessories and key chains. They can also be used to make tie chains, lead ropes, tie downs, gate latches, and other applications. Bolt Snaps are easy to handle and the swivel eye prevents tangling. The spring-loaded latch is thumb-operated and makes connecting and disconnecting easy. Made of tough zinc die cast with nickel-plating for durability and corrosion resistance.