High Quality - The nuts are made of high quality zinc plated carbon. Zinc plated carbon steel is widely used material in hardware, for long service life Safety - Our nuts adopt high quality material, environmental protection and non-toxic. In the process of use, there are no toxic substances to be released Precise threading - The thread of nuts is very precise and clean. It can make your job easier. Our nuts conform to the standardized metric system Wide application - The nuts are ideal for professionals and DIY enthusiasts. The kit is perfect for replacing lost and lost. 5 popular sizes for your choice: M3/M4/M5/M6/M8 Product Description < p>Specifications: Materials: Zinc Plated Carbon Steel Color: Silver Nut Size and Quantity(Optional): M3 x 50pcs< /p> M4 x 50pcs M5 x 50pcs M6 x 50pcs M8 x 30pcs NOTE: The products contain small parts, never let children play to avoid accidental swallowing. Package content: M8, 30pcs T-nut is used for attach wood, particle or composite materials,