KingChain® heavy-duty Security Snaps are a great general-purpose accessory with lots of uses. Attach them to chain, rope and other accessories, they're great for securing attachments to equipment, bags and gear. The reduced eye at one end allows you to hang things from the snap without it moving all around. The locking mechanism is very secure. These security snaps are made from heavy-duty steel and galvanized for long-lasting weather resistance. 353 lb (160 kg) Safe Work Load. Never exceed the Safe Work Load (SWL). **NOTE** Do not use for overhead lifting. 3-1/8" overall length with 7/16" eye opening.