77 sets of leather solid copper rivets and burrs: 47 sets of copper rivets and burrs (12mm x 4mm x 19mm), 30 sets of copper rivets and burrs (12mm x 4mm x 7mm). Includes a transparent storage box to organize and prevent loss of rivets. Newly developed No. 9 solid copper rivets feature a smooth, pattern-free surface for a clean, minimalist look. Designed to meet customer demand for a sleek rivet finish. 77 sets (154 pieces) in two lengths: 19mm and 7mm, with a 4mm pipe diameter. Offers versatility and high performance for leather crafting projects. Easy to install—create professional, durable rivets in minutes. Ideal for both beginners and experienced crafters. Wide range of applications: suitable for leather goods, jeans, keychains, bags, belts, wallets, saddles, shoes, canvas, and other DIY crafts. High-quality copper material ensures durability and a polished finish. Material: Copper. Color: As shown. Package includes: 1 set of rivets (154 pieces total). Note: Image colors may vary slightly due to lighting and screen settings. Measurement tolerance: +/- 1-3mm.