:Comes with the designs of flat head, knurled body, smooth and burr-free surface, this rivet nut set has reliable performance, and with the different specifications, it is pretty practical.Superior material and zinc plated technology make the rivet nut have excellent rust resistance and high strength.These rivet nuts are made of carbon steel, which is hard and firm.The length of the storage box is 17cm, the width is 10cm and the height of it is 2.2cm.It can apply in many kinds of heavy duty materials including sheet metal, steel, aluminum, plastic, etc.Item Name: Rivet NutsMaterial:Carbon SteelSurface Treatment: Zinc PlatedRivet Style: Flat Head Vertical ThreadSize Details:17cm x 10cm x 2.2cm/6.69 x 3.94 x 0.87 (Approx.)Notes:Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.Package Includes:190 X Rivet Nuts (M3 x 60, M4 x 50, M5 x 35, M6 x 25, M8 x 10, M10 x 5, M12 x 5)