ITEM NAME:175pcs Set Rivet Nut Mixed Zinc Steel Rivnut Insert Nutsert Threaded M3 FMK Descriptio n Description: Rivet nuts can be installed in many different materials, including steel, plastic and fiberglass. The ribbed body holds the nut in place so it does not rotate when the screw is tightened. The tool folds the nut to form a back flange that secures the nut to the material. Strong and corrosion resistant. Not easy to rust. Easy to use. Durable and practical. Specifications: Material: Carbon Steel Head Type: Flat Head Color: Picture Color Size: M3, M4, M5, M6, M8, M10 Box size: 17.8*10.5*2.3cm Quantity: M3 (45pcs); M4 (45); M5 (35); M6 (20); M8 (15); M10 (15) Package Included: 45pcs X M3 * 9mm Rivet Nut 45pcs X M4 * 11mm Rivet Nut 35pcs X M5 * 13mm Rivet Nut 20pcs X M6 * 15mm Rivet Nut 15pcs X M8 * 18mm Rivet Nut 15pcs X M10 * 21mm Rivet Nut Note: Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. We offer you what you need! 175pcs Set Rivet Nut Kit Mixed Zinc Steel Rivnut Insert Nutsert Threaded M3-M10.45pcs X M3 9mm Rivet Nut. Rivet nuts can be installed in many different materials, including steel, plastic and fiberglass. 45pcs X M4 11mm Rivet Nut. 35pcs X M5 13mm Rivet Nut. 20pcs X M6 15mm Rivet Nut.