[Metal Construction]Leather rivet made with a alloy and iron screw. Each set includes 1 rivet and 1 screw. Size is 18mm diameter with 8mm screw for leather tasks. [Smooth Polished Surface]Screwback rivet features sealing and polishing for a. The round head rivet helps give bags belts wallets and shoes a neat completed appearance. [Tight Screwback Fit]Two piece structure connects closely after installation. The stud stays centered and resists loosening during use, helping improve the look of straps small leather parts and accessories. [Simple Installation]Punch a hole in the material, pass the 8mm screw through, place the , and tighten with a tool. Suitable for quick assembly on leather goods, clothing parts, and hardware fixing. [10 Set Pack for Multiple Uses]Includes 10 round head rivets and 10 screws. Fits backpacks handbags wallets shoes clothes small straps belts drawer handles and scissors fixing or decoration.