Size: M6 12 mm Length, 9 mm outdoor diameter, 6 mm threaded hole diameter, please check the size before buying. High quality carbon steel: the nut crossed is made of high quality metal materials, solid and durable, the galvanized surface can prevent rust, corrosion and long life. Robust material: widely used to assemble beds, cribs and Furniture, but also to connect wooden planks, benches, cabinets and various other DIY projects, etc. Perfect partner: used in conjunction with connection bolts to form a angle seal Right, which makes the furniture more secure, easy to install nuts, small size, easy to transport and use. You will get: a batch of 50 pieces, enough to allow you to replace the nut replaced original or the missing nut. The nut and the connector bolt can be used in seems to form a joint at right angles, which makes the furniture firmer. The nut is easy to install, small and easy to transport. You can replace the original nut or nut missing if necessary. (Please check the size