Made of stainless steel, corrosion resistance and anti- rust. Rotating flexible, -smooth and minimum twist with powerful pulling force. Simple design for easy operation, not easy to wind around the fishing line. High strength connectors can connect most fishing accessories, like fishing line, hooks, lures, etc. High performance in bass trout fishing, freshwater, saltwater, offshore fishing, etc. Specification: Material: Stainless Steel 1# Length: approx. 4cm / 1.57inch 2# Length: approx. 3.6cm / 1.42inch 3# Length: approx. 3.4cm / 1.34inch 4# Length: approx. 2.9cm / 1.14inch 6# Length: approx. 2.5cm / 0.98inch Color: Gray Package Includes: 50 Pieces Fishing Swivels with Snap(2 Pack) Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Please kindly understand. Thank you.