Features: Make from High carbon spring steel, high strength, rusts resistance. Corrosions resistant and quick to spring-back after opening. Suitable for both saltwater and freshwater. The fishing split rings could not only make surely the smooth connection of lures or baits but also could provide realistic move for Lures or baits. Perfect for use with lures, rigs and leader, easy to attach to other component. Whether you tie lures or baits on it, and can provide a very stable connection. Specifications: Materials: High carbon spring steel Diameter: 4mm (0.16inch)/5mm (0.20inch)/6mm (0.24inch)/7mm (0.27inch)/8mm (0.31inch)/9.0mm (0.35inch)/10mm (0.39inch) Package Includes: 500Pcs Fishing Split Rings note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.