Unlike our other links, this is based around a crane swivel which is machined to be one of the strongest and smoothest swivels around. Strong wire forms the clip which is bent at the end, so it locks into the lock mechanism securely. They are ideal for attaching rigs, weights when boat fishing and lures in their smallest sizes. Based around a crane swivel which is machined to be one of the strongest and smoothest swivels available. Strong wire forms the clip which is bent at the end, to lock into the mechanism securely. Ideal for attaching rigs, weights and lures in their smallest sizes. Size 3/0 Breaking 60kg/132lb Tronixpro Interlock Snap Swivel Size 3/0 (Quantity 5) ISS30