PC Fasteners -Hex Socket Screws Highlights Generic Brand Hex Socket Screws Description: Made of high quality stainless steel, corrosion resistant and durable for long time use Easy to install and durable to use These screws and nuts will be a great replacement for industrial and construction fasteners. Used widely in home, office, school, hospital, garden, bicycle, motorcycle, automobile, workshop, electrical equipment, ship assembly and other industry of machines. All screws will be packed in a sturdy plastic box, can be used for storage box. specification: Material: 304 stainless steel Size: 13*6.8*2.5cm/5.12*2.68*0.98in It contains the following sizes: 20pcs x M3 x 3 20pcs x M3 x 4 20pcs x M3 x 6 20pcs x M4 x 4 20pcs x M4 x 6 20pcs x M5 x 5 20pcs x M5 x 8 20pcs x M6 x 6 20pcs x M6 x 10 20pcs x M8 x 8 Package includes: 1 Piece Set Screws Assortment Kit ( 200pcs) Note: 1. We provide clear pictures, measurements if possible. Please check as much as possible to make sure the item is the one you need. 2. Please allow 0.5-1 inch differs due to manual measurement. (1inch=2.54cm) 3. Instruction is not included. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you.