Swivel With Interlock Snaps
Rigs combine fishing line, weights, hooks, swivels and snaps together so that a bait or lure can be presented to fish. Surf fishing is one such type of fishing that uses rigs extensively. The live bait rig in particular uses swivels with interlock snaps to connect a weight to the leader rig.
The swivels with interlock snaps can also be used to attach hooks on these type of rigs.