General Description This insert nut assortment kit includes 11 different sizes: M4*8, M4*10, M5*10, M6*8, M6*10, M6*13, M6*15, M8*15, M8*20, M10*15, M10*25. These metal threaded inserts are ideal for pre-embedded connectors and wooden furniture, providing a stable and easy-to-install solution. Technical Specifications Number of Pieces: 230 Material: Metal Insert Size: M4 to M10 Compatibility and Accessories These inserts are designed for use with softwoods such as pine, plywood, and fiberboard. A small hole must be drilled before installation. Installation Installation is simple: simply drill a hole of the appropriate size, then use a hex key to screw in the nut. Thanks to their design, the tapered external threads minimize the risk of loosening due to vibration. Use These inserts are ideal for applications in wooden furniture, providing a strong and durable fixing.