Amazon.com : Rite Angler Wire Leader Fishing Rig 18" Nylon Coated (6 Pack) 45lbs with Crane Swivels, O'Shaughnessy Long Shank Hook and Interlock Snaps for Saltwater Big Game Fishing (Black, 3/0) :
Rite Angler Barrel Snap Swivels - TunaFishTackle
Rite Angler Barrel Swivels with Double Snap - TunaFishTackle
CRR SNAP SWIVEL - Custom Rod and Reel
Rite Angler Wire Leader Rig Nylon Coated 20lbs, 30lbs, 45lbs in Various Lengths with Crane Swivels and Interlock Snaps for Saltwater Fishing 6pack - Walmart.com