Description: 340pcs Stainless Steel Hex Socket Cap Head Screws and Nuts. Made of 304 stainless steel for durability and great corrosion resistance. Environment-friendly, no pollution, high hardness. Many length choice in one set meet daily basic needs Stored in a plastic case, easy to carry. Specification: Content: M3*5 x 20pcs Screws M3*6 x 20pcs Screws M3*8 x 20pcs Screws M3*10 x 20pcs Screws M3*12 x 20pcs Screws M3*14 x 20pcs Screws M3*16 x 20pcs Screws M3*18 x 20pcs Screws M3*20 x 20pcs Screws M3 x 160pcs Hex Nuts Box Size: 13*6.8*2.5cm/5.11*2.67*0.98inch Package Includes: 1 Set M3 Screws and Nuts