Designed to eliminate line twist and make a dependable and strong link between the main line and a leader. The Mustad Ball Bearing Swivel features a polished ball bearing for the best possible operation without compromising strength and function. The two welded rings are solid and strong giving you the confidence to be around big fish. When choosing a swivel always go small. Pick a swivel, which will match the breaking strength of your line. This will give the best performance under considerable pressure. 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.