Features Carbon Steel Construction: Made of carbon steel with a galvanized , ensuring strength and durability for long-lasting use. Versatile Embedded Nut Design: The embedded nut design allows for easy installation in various materials such as steel and plastic, providing convenience and flexibility for different applications. 6 Specifications for Varied Needs: Includes M3, M4, M5, M6, M8, and M10 specifications, catering to a wide range of project requirements. Efficient 300-Piece Set: Comes with 300 rivet nut installation tools, streamlining work processes and increasing productivity. Compact and Portable: With a small size, this rivet nut set is easy to carry and store, while still delivering excellent performance. Specification: Item Type: Rivet Nut Set Material: Carbon steel Specification: M3, M4, M5, M6, M8, M10 Quantity: 300pcs Treatment: Galvanized Application: Rivet nuts can be installed in a variety of materials, including steel, plastic and fiberglass 1 Box rivet nut: M3: 80 x two colors total , M4: 70 x two colors total, M5: 50 x two colors total, M6: 50 x two colors total, M8: 30 x two colors total, M10: 20 x Two colors total Package List: 1 Box Rivet Nut Set 1 x Plastic Packaging Box Package List 1 Box Rivet Nut Set 1 x Plastic Packaging Box