FISHING LINE SINKER SLIDES Hook Shank Clip Connector Swivels 50 PCS 50 PCS Fish Finder Rigs - Barrel Swivel with Interlock Snap RED /BLACK FISHING LINE SINKER SLIDES Hook Shank Clip Connector Swivels Total length 1 3/4" THEY ARE DESIGN TO ALLOW FISH TO TAKE YOUR BAIT WITHOUT FEELING WEIGHT OF THE SINKER.