Sougayilang Fishing Rolling Swivel with Coast Lock Snap is the perfect choice for saltwater, high speed trolling, jigging, and offshore fishing. Made of copper body with stainless steel welding ring and snap with black nickel plating, these swivels are smooth and have stainless steel balls loaded for smooth action, rotating without limit and reducing twist to a minimum. The quick lock-open design allows you to change leaders or lures in seconds. This 30-piece set includes sizes #6-#3/0, with tests ranging from 30lbs-120lbs. Perfect for freshwater bass fishing, these swivels will help you get more fish and keep your line in the water longer.