Features: Secure your documents effortlessly with these high strength metal screw rivets, used for binding of ledgers, folders, and multiple page without loosening. Features easy installation through its innovative inner locking male female designs and rustproof break resistant alloy construction for long time durability. Suitable for office professionals, students, and archivists requiring securelybinding and fastening for frequently accessed files and organizational project. Perfectly handle thick booklets in corporate setting, school assignments, or home craft while maintaining neat document presentation. Crafted with kids safe metal, these rivets nuts assortment supplies used across educational, professional, and household applications. Specifications: Component: Metal Color: Gold, Silver Size1: Approx. 10mm/0.39in Size2: Approx. 12mm/0.47in Size3: Approx. 15mm/0.59in Weight: Approx. 300g Package Includes: 100Pieces rivets Nuts note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color