DESIGN- Designed with stainless steel material, the Stainless steel material provides strength and offers good corrosion resistance in many environments.FUNCTION- Fixing component, industrial and construction fasteners.Used widely in the home and office appliance, communication equipments, ship assembly and other machinery industryTotal including 240PCs all kinds of screws the nuts,which can satisfy the basic requirement for manual work.DETAIL- There is a latch that is easy to lock into place so you can sure the box won't come open and spill the contents.Material: Stainless SteelColor: SilverModel(inside diameter): M3 M4 M5 M6 M8Screw size(inside diameter and column length):M3x3mm 20pcsM4x5mm 20pcsM6x10mm 20pcsM3x4mm 20pcsM4x6mm 20pcsM8x8mm 20pcsM3x5mm 20pcsM5x5mm 20pcsM3x6mm 20pcsM5x8mm 20pscM4x4mm 20pcsM6x6mm 20pcs1. High hardness and will not deform2. Durable and does not rust3. High-grade and practical4. Wear-resistant and anti-corrosionPackage Contents:240x Screws5x Wrench(M3 M4 M5 M6 M8)Only the above package content, other products are not included.Note: Light 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.