Opening Size Square Eye Swivel Harness Snap Zinc DiecastSwivel eye bolt snaps are a versatile, flexiable and user-friendly attachment for the end of a strap, for fixed eye bolt snaps that is mostly fixed in one position with another fasteners or straps. Our snaps featuring a smooth and easy-to-use hook and a strong metal design, our bolt snaps provide strength, durable, and convenient to all consumers. They are mostly use on dog leashes. handbag straps, chains, name tag chains, keytags and more. Products are mostly crafted in zinc alloy diecasting machines with various of size and styles of moulds.