Different screw sizes: M3*8, M3*12, M3*16, M3*20, M4*8, M4*12, M4*16, M4*20, M5*8, M5*12, M5*16, M5 *20, M6*8, M6*12, M6*16, M6*20, to meet different needs. It is a must-have hand tool for the family.Using M3, M4, M5 and M6 nuts and washers, the installation is now more precise and the contact area is increased to reduce pressure and protect parts and screws.Nuts and washers are arranged in a storage box, so you can easily find your own way in the set and avoid losing them when needed.They are resistant to oxidation and corrosion even at high temperatures. The main uses of stainless steel hexagonal screws are very common in many fields such as electronics, electrical appliances, chemicals, water, machinery and equipment, and furniture.Colour: as shownMaterial: metalPackage Contents:1 set * Hex BoltsOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.