ITEM NAME:100-Pack Zinc Plated Carbon Steel Rivet Nut Flat Head Insert Nuts M3-M8 Description: 100pcs Mixed Zinc Plated Carbon Steel Rivet Nut Kit Tools 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: M3/M4/M5/M6/M8 Quantity: 100pcs Package Includes: 30 x M3 Rivet Nut 30 x M4 Rivet Nut 20 x M5 Rivet Nut 10 x M6 Rivet Nut 10 x M8 Rivet Nut 1 x Storage Box.10 x M8 Rivet Nut. 100pcs Mixed Zinc Plated Carbon Steel Rivet Nut Kit Tools. 30 x M3 Rivet Nut. Rivet nuts can be installed in many different kinds of material, including steel, plastic and fiberglass.