Description: Made of stainless steel, corrosion resistance and anti- rust. Simple design for easy operation. Flexible rotation, not wind around fishing line, with powerful pulling force. High strength connectors can connect fishing line, hooks, lures, etc. High performance in bass fishing, freshwater, saltwater and offshore fishing. Specification: Material: Copper+Stainless steel Size: As Below 10# Length: approx. 9 mm/0.35 inch, Diameter: approx. 2 mm/0.08 inch 8# Length: approx. 10.3mm/0.41 inch, Diameter: approx.2.3 mm/0.09 inch 7# Length: approx. 11.4mm/0.45 inch, Diameter: approx.2.5 mm/0.10 inch 6# Length: approx. 12.6mm/0.50 inch, Diameter: approx.2.9mm/0.11inch 5# Length: approx. 13.4mm/0.53 inch, Diameter: approx.3.2 mm/0.13 inch 4# Length: approx. 15.2mm /0.60 inch, Diameter: approx.3.5 mm/0.14 inch 3# Length: approx. 16.3mm/0.64 inch, Diameter: approx.3.8 mm/0.15 inch Package Includes: 100 Pieces Fishing Rolling Swivel Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!