1) Material: carbon steel 2) Sizes: 1/4", 5/16", 3/8", 1/2" zinc alloy swivel key chain swivel,Machine swivel,chain swivel G-401 ... CHAIN EYE SWIVELS .Forged Carbon Steel. .Quenched & Tempered .Ultimate load is 5 ... ,0007.00RU21613811/24.404.003.001.5016.3845,20015.04 zinc alloy swivel key chain swivel,Machine swivel,chain swivel