materials: screw nut made of high-quality zinc alloy, hardness with high rust resistance, wear and resistant environmental protection as well as aesthetic properties. Package includes: 11 sizes include x 8, x 10, M5 x 10, M6 x 8, M6 x 10, M6 x 13, M6 x 15, M8 x 15, M8 x 20, M10 x 15, M10 x 25, Total 230 pieces. a transparent box with Meet your different needs. Easy to use: Easy to install, just drill the hole with the appropriate size and install it with a hex key. Tapered male threads do not easy to pull out due to vibration. Wide application: suitable for soft woods such as pine, plywood, fibreboard etc. such as ready-to-assemble furniture, drawer runners, showcases and shipping boxes, have a good effect on the furniture combination. Colour: as shown Material: Zinc alloy Package Contents: 30 x M4x8 screw-in nuts 60 x M4x10 screw-in nuts 45 x M5x10 screw-in nuts 18 x M6x8 screw-in nuts 32 x M6x10 screw-in nuts 13 x M6x13 screw-in nuts 12 x M6x15 screw-in nuts 10 x M8x15 screw-in nuts 5 x M8x20 screw-in nuts 3 x M10x15 screw-in nuts 2 x M10x25 screw-in nuts Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.