Description: Stainless steel countersunk screws are anti-corrosion, rustless, non-pollution and high-hardness. They are widely used in industrial. These screws are made of high quality 304 stainless steel, rust and corrosion resistant. There are many length in one set which can be commonly used in home and office appliance, machinery, furniture, repair and DIY inventions. Features: 1. Made of high quality 304 stainless steel, durable to use, environment-friendly, no pollution, high hardness. 2. This set is organized by size in a transparent storage case for quick access and protection. 3. There are 5 different lengths in one set to meet your various needs. 4. The moderate and clear hex sockets heads can make your working more easily. 5. Ideal for use by a variety of workers and repairmen from plumbers to assemblymen both professional and amateur, even DIYers can opt to use it. Specifications: Material: 304 Stainless Steel Color: Silver Quantity: 400pcs Weight: Approx. 258g Button Head M3 x 6 M3 x 8 M3 x 10 M3 x 12 M3 x 14 40pcs 40pcs 40pcs 40pcs 40pcs Flat Head M3 x 6 M3 x 8 M3 x 10 M3 x 12 M3 x 14 40pcs 40pcs 40pcs 40pcs 40pcs Package Include: 1 Set x Hex Socket Head Screws (include 400pcs)