Ample quantity: 12 pieces double ended bolt snap hooks; Small gap, large flexibility, easy to come and go, safe and convenient to use Multi-functional design: the design of the metal double ended bolt snap is good for using with rope, chain, straps, animal leashes, horse tack and other home, farm and recreational applications; Also could be applied for a gate latch, a bucket hanger, hanging feed tubs, hay bags in the stall and many other various uses Practical features: the double-ended design makes bolt snaps more versatile; Spring-loaded bolts provide secure closure and easy-open thumb lever Proper size: the length of the double ended bolt snap is approx. 4.7 inches; Don't overload for your safety, working load limit 110 lb (50 kg); It can be applied flexibly within its acceptable range Quality material: the double ended hook is made of quality zinc alloy; It would be great to simply make key rings with or using these for a leash-to-collar connection