[Perfect Packaging] 11 sizes: M4*8, M4*10, M5*10, M6*8, M6*10, M6*13, M6*15, M8*15, M8*20, M10*15, M10*25. Different sizes can meet your various needs. [Insert Nuts Assortment Kit] Threaded wood inserts are used for pre-embedded connectors in wood furniture. Standard hexagon socket head, smooth and flat, features flanged thread texture, stable structure, and easy installation. [Design] The nut thread surface is smooth without burrs, and the screw-on sleeve can be quickly installed. Precise external thread and beveled internal hex head ensure the clamp nut is correctly positioned and securely fastened. [Easy to Install] Simply drill the appropriate hole and install using a hex wrench. The tapered outer threads help prevent loosening due to vibration. [Scope of Application] Suitable for soft wood such as pine, plywood, fiberboard, etc. (a pilot hole must be drilled before installation). Number of pieces delivered: 230 Note: All data is manually measured; please allow 1-3 cm measurement variation. Due to differences in lighting and display, colors may vary slightly. The actual item received will prevail.