Descriptions: Material: The open jump ring is made of brass, and the surface has been electroplated to make it more corrosion-resistant and durable; the surface is smooth and shiny, which can give your DIY products a good visual effect. Open Design: The open ring design allows the accessory to be easily worn on various non-openable jewelry parts, making it flexible and convenient to use. Easy to Use: The open jump rings are not welded closed and can be easily closed and opened using various tools such as pliers. It is reusable and not easy to break. Application: Can be used as a connector in jewelry construction, suitable for most jewelry and crafts, often used in bags, ribbons, keychains, DIY jewelry, home decoration, fabric pendants, handmade art crafts, or some other projects. Specifications: Inner Diameter: 15mm / 0.59" Outer Diameter: 20mm / 0.79" Thickness: 2.5mm / 0.1" Material: Brass Color: Gold Tone Finish: Electroplated Package Included: 20pcs x Open Jump Rings