High-Quality Materials: Made of high quality zinc alloy, strong and sturdy, rust and corrosion resistant, reliable safety, and can be used for a long time. Double-ended Design: Double-ended design makes it more versatile than normal snap hooks, spring bolt ensures a safe closing and easy-to-open thumb lever. Our double-ended Bolt Snaps are easy to use, allowing for easy on/off. Wide Application: Double ended hooks can be widely used in animal leashes, ropes, chains, key rings, straps, harnesses and other home, farm and recreational applications. Also, can be used for a gate latch, a bucket hanger, hanging feed tubs, hay bags in the stall and many other similar situations. Up to Load 220 lb: These double ended bolt snaps are strong and sturdy, but please do not overload for your safety, the limit working load is 220 lbs (100kg). You will Get: 2/8/16 pack double-ended bolt snaps (4.7 inches). They are easy to open and close, safe and convenient to use, ideal for a variety of applications