Features: This versatile set includes rivet heads and nut in sizes from 3mm to 12mm, produced of high strength carbon steel for outstanding durability and erosion resistance, ensuring long lasting performances in demanding applications. Designed for quick and easy installation without complex tools, this 77 piece fastener set features a compact storage solution that enhances work efficiency and portability for seamless on the go use. Ideal for enthusiasts, professional mechanics, and factory workers seeking stable fastening solution, this tool set caters to users who require sturdy and efficient connection in their projects. Perfect for automotive repairs, furniture assembly, and construction site , this set effectively handles various riveting challenges, providing a practical solution for securing components in diverse environments. A must have addition to any toolkit, this comprehensive carbon steel fastener collection delivers robust performances and versatility, making it indispensable for both home workshops and industrial settings. Specifications: Component : carbon steel Size: mixed Package Includes: 1 set Rivet nut note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.