EVERBILT Double Bolt Snaps have various household and industrial applications helping you avoid tying ropes together with knots by utilizing bolt snaps at each end. They are 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. Double Bolt Snaps are easy to handle, have the same size opening at both ends and the spring-loaded latches are thumb-operated, making connecting and disconnecting easy. Made of tough zinc die cast for heavy-duty use with nickel-plating for durability and corrosion resistance.