3/8 Inch Nickel Bolt Snap Length: 2.13 inches Swivel Rectangle Inner Loop 11mm Swivel Rectangle Outside Loop measurement 24mm These heavy duty nickel plated swivel snap hooks come with a 3/8 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, clothing lines, plant hangers etc