Offshore Anglers Extreme Stainless Steel Tournament Snap Swivels are smooth barrel swivels and the toughest snaps we could find, delivering the strongest possible connection for the size. Black-nickel finish. Per 3. Sizes: 2 (270-lb. test), 4 (170-lb. test), 6 (70-lb. test). Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Barrel & Crane.