Applicable to the field of fastening plates and pipes of different thicknesses.2. Made of aluminum which provides strength, anti-corrosion and long service life.3. There are 6 different sizes M3 M4 M5 M6 M8 M10 which can meet your different usage needs.4. Comes with a plastic storage box for convenient use and storage.5. It can be installed from one side of the workpiece in seconds. Specification: Features: Applicable to the field of fastening plates and pipes of different thicknesses. Made of aluminum which provides strength, anti-corrosion and long service life. There are 6 different sizes M3 M4 M5 M6 M8 M10 which can meet your different usage needs. Comes with a plastic storage box for convenient use and storage. It can be installed from one side of the workplace in seconds. 100% Brand New. Item Type: Flat Head Rivet Nut Set. Material: Aluminum. Color: Shown as picture. Size Thread Size: M3, M4, M5, M6, M8, M10 x Rivet Nuts