Features: Craft from premium component with a tensile strength, this fishing rings outperforms in harsh marine environment, making it essential fishing accessories for saltwater anglers. Achieving higher resistance than traditional metal fishing hardware. Professional fishermen and extreme enthusiasts will appreciate its 360 degree rotating mechanism and quick release design, specifically engineered for fishing. Perfect for battle fish in water or securing critical gear during mountain ascents, its rotation system reduces line frictions while maintaining shape under tension. Enables easy installation, this fishing tackle revolutionizes tackle replacement during competitive tournaments or emergencies. Specifications: Size: Extra Small size 11mm/4.2.mm Small 13.5mm/5.2mm Middle size 14.5mm/6mm Large size 16mm/6.8mm Pattern: 2 Pattern Optional Note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color. Package includes: Package 1: 30pcs Open Connector Oackage 2: 50pcs O-Rings