1、Complete Specifications: This set of rivet nuts has a total of 165PCS nuts in 5 specifications of M3, M4, M5, M6 and M8, which can meet your different needs. 2、Zinc Alloy Material: The rivet nut of this kit is made of zinc alloy, with strong structure, high hardness, no deformation, not easy to rust, wear and corrosion. 3、Easy Storage: This rivet nut is boxed, it can be neatly stored when not in use, it is not easy to lose, and it is easy to access. 4、Excellent Durability: These rivet nuts have superior strength and are resistant to corrosion and rotation due to their accuracy threads and galvanized surface. 5、Wide Applications: Our rivet nuts can provide a strong connection for screws in home improvement and are suitable for a wide range of manufacturing of automobiles, aircraft, electrical appliances, etc.