5pcs Heavy Duty Ball Bearing 8# Swivel Solid Rings for Sea Fishing Ball bearing swivels loaded with high-class stainless steel balls, provide maximun protection against twisted and tangled lines. It's necessary for trolling, downriggers,saltwater and big-game fishing. Abrasion resistant, anti-corrosion. High-polished stainless steel bearing, spin easily. Solid welding ring in each end.