The Spro Power Swivel is made from a quality, high performance stainless steel. It is touched and finished with a gunmetal black that makes it nearly disappear in the water. The smooth, free rotation of the swivel makes it a must need for all tackle boxes. Also, this Spro Power Swivel has extreme strength and will last you a long time. You can guarantee that these Spro Power Swivels are 1.5 times stronger than you standard swivels, even with its small profile. These swivels are a great match for wahoo, mahi, kingfish, salmon, striped bass, and so much more.