This comprehensive 230-piece zinc alloy threaded insert nuts assortment kit is the ultimate solution for all your wood furniture assembly needs. The kit includes 11 different sizes ranging from M4 to M10, making it incredibly versatile for a wide range of projects including cabinets, beds, desks, and more. Each size is conveniently organized in a clear plastic storage case, so you can quickly find the exact insert nut you need without any hassle. The breakdown includes: M4x8 (30pcs), M4x10 (60pcs), M5x10 (45pcs), M6x8 (18pcs), M6x10 (32pcs), M6x13 (13pcs), M6x15 (12pcs), M8x15 (10pcs), M8x20 (5pcs), M10x15 (3pcs), and M10x25 (2pcs). Crafted from durable zinc alloy, these screw-in insert fasteners provide a strong, reliable hold in wood materials. The threaded exterior grips firmly into wood while the interior threading accepts standard bolts and screws for secure furniture assembly. Not suitable for children under 6 years of age due to small parts.