Description: These screws are made of high quality 304 stainless steel, rust and corrosion resistant. There are many different sizes 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, rust and corrosion resistant, widely used in industrial. 2. This set is organized by size in a transparent storage case for quick access and protection. 3. There are 7 different sizes in one set to meet your various needs. 4. The moderate and clear cross 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: 220pcs Weight: Approx. 317g M5 x 12 20pcs M4 x 25 30pcs M4 x 10 30pcs M4 x 16 30pcs M3 x 16 40pcs M3 x 10 40pcs M3 x 20 30pcs Package Include: 1 Set x Pan Head Cross Tapper Screws (include 220pcs)