Essential items used to connect fishing line and lures, as well as with rigs like sinkers and swivels. 【Sizes】Φ5mm / Φ6mm / Φ7mm / Φ8mm / Φ9mm (5 sizes, 40 pieces each, total 200 pieces, with storage case) 【Material】Made of high-quality stainless steel, rust-resistant and highly corrosion-resistant. Flat-ground processing increases strength. 【Large Capacity】Includes 5 different sizes of split rings, a generous set of 200 pieces, which is great because they are consumables that run out quickly! Comes with a storage case for easy organization by size, making them convenient to use and carry! 【Multi-purpose】Split rings are used to connect hooks and lures and are essential items for most hard lure fishing. They can also be used for accessories and industrial products, not just fishing. Thank you.