1、Firm Connection: The threaded and knurled rivet ensures firm connection between work pieces, which is very likely to loosen, very reliable. 2、5 Types in Pack: There are 5 types of M3, M4, M5, M6, M8 rivet nut in the set, and a total of 100pcs will surely satisfy your various needs. 3、Wide in Utility: Allows for wide application on most vehicles, such as cars, trucks, ships, SUVs, travel trailers and many other vehicles. 4、Aluminium Alloy: Using premium aluminium alloy material, the rustproof knurled rivet nut fastener has great durability for long term using. 5、Simple Carrying: The storage box attached can hold all the rivet nut in an orderly way, thus largely simplifying the carrying to outdoor. 30 x M3 Rivet Nut30 x M4 Rivet Nut20 x M5 Rivet Nut10 x M6 Rivet Nut10 x M8 Rivet Nut1 x Storage Box Item Type: Rivet NutMaterial: Aluminum AlloyProduct Specification: M3, M4, M5, M6, M8Application: Widely applicable to most vehicles, such as cars, trucks, ships, SUVs, travel trailers, and other vehicles.