Upgrade your larger jewelry projects with our 20Pcs Brass Spring Ring Clasps. These heavy-duty clasps feature real 18K gold plating over solid brass with rack plating for consistent, even coverage. Size: approx. 18.5mm long, 16mm wide, 2.5mm thick with 2mm hole and 8.5mm inner diameter. Perfect for necklace making, thick bracelet crafting, leather cord jewelry, purse charms, eyeglass chains, keychains, and other DIY jewelry supplies. The large spring ring design provides secure closure for heavy or bulky designs. Great for repairing broken jewelry, replacing worn clasps, or completing new statement pieces. Ideal for professional jewelry makers, beginners, and crafters. Real gold plating gives your jewelry a luxurious, high-end finish.