Bearing Swivel Whole Nickel Plated (Silver)The main body is made of high quality alloy copper material, and the welding rings (solid rings) and quick snap are made of SUS304 stainless steel (saltwater corrosion resistant steel) on both ends, making it highly corrosion resistant as well as breaking strength. Ball Bearing Swivel: Equipped with 6 stainless steel bearing balls that are high in spherical strength, it can be rotated with super spin, effectively preventing line troubles, such as threading, and using a snap, the connection part is large enough to allow the lure to move easily, making it relatively large action. Welded Ring Included: The welding ring on top of the ball bearing swivel reduces the risk of damage and cutting of the line. QUICK SNAP (LOCK SNAP, STRONG SNAP) INCLUDED: Easily change the tembin weights and lures so you can fish efficiently without missing a chance of time(especially those who are just starting to lure fishing or dont like knots and are recommended fishing swivels) Amysports Quick Snap Ball Bearing Swivels range from 0# to 8#.(It is recommended to choose a smaller size in the range of use)