The Mustad Barrel Swivel with safety snap is made from high quality materials and will not let you down. Makes changing your lure easy. When choosing a swivel always go small. Pick a swivel that matches the breaking strength of your line. This will give the best performance and presentation. When tying your fishing line to the swivel eye make sure to center the knot, as this will ensure the best rotation. Made from brass, for either saltwater or freshwater use. Black nickel finish.