3/4 Inch Nickel Bolt Snap Length: 3 inches Swivel Rectangle Inner Loop 19mm Swivel Rectangle Outer Loop 30mm These heavy duty nickel plated swivel snap hooks come with a 3/4 inch rectangle-shaped swivel head. It is made with a nickle finish with a steel core for strength and durability. These snap hooks can be used for dog leashes, bag straps, camera bag straps, shoulder straps, purse straps, horse bridles etc