ITEM NAME:105 Pairs M4-M12 Rivnuts Blind Nutserts Threaded Rivet Nuts Carbon Steel Description: Made of carbon steel and zinc plated, has a long service life. Different specifications can meet different needs. Rivet nuts can be installed in many different kinds of material, including steel, plastic and fiberglass. Easy to use and install, convenient and practical. Specification: Material : Carbon Steel, Zinc Plated Product Name: Rivet Nut Type: Flat Size: M4/M5/M6/M8/M10/M12 Quantity: 210pcs Package Includes: 65 x M4 Rivet Nut 50 x M5 Rivet Nut 40 x M6 Rivet Nut 30 x M8 Rivet Nut 20 x M10 Rivet Nut 5 x M12 Rivet Nut 1 x Storage Box.5 x M12 Rivet Nut. 65 x M4 Rivet Nut. Rivet nuts can be installed in many different kinds of material, including steel, plastic and fiberglass. 50 x M5 Rivet Nut. 40 x M6 Rivet Nut. 30 x M8 Rivet Nut.