These Heavy-Duty Open Jump Rings are made from solid brass with a durable gold finish and anti-tarnish coating, perfect for professional jewelry designs. Their cut (open) style makes them easy to use and extra secure for heavy components. Type: Open / Cut Jump Rings Shape: Round Gauge Options: 15 Gauge (extra thick), 18 Gauge (thick) Material: Solid Brass Finish: Gold Finish with Anti-Tarnish Protection Quantity per Pack: – Larger sizes (e.g. 15g / 15mm): ~20 pcs – Smaller sizes (e.g. 18g / 6mm): up to 100 pcs Use: Ideal for heavy pendants, chainmail, bold necklaces, layered designs These thick, strong brass jump rings provide excellent hold and durability—engineered for heavy-duty and high-end jewelry making.