Specifications:Made of high grade brass and stainless steel, sturdy and anti-corrosion.Well polished surface without any bur, feels smooth and quite comfortable.Includes both Female-Female standoffs and Male-Female standoffs in different sizes.Waterproof, rust resistant and easy to clean, you can simply clean it with a cloth.Well protected and assorted in a plastic box for convenient use and storage. Type: Standoffs Screws KitMaterial: Copper, Stainless SteelQuantity: 300Pcs/BoxFeatures: Anti-oxidation, Anti-corrosion, Assorted, All in One Note:Due to the light and screen setting difference, the items color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement. Package Includes:Male-Female Standoffs:25 x M2x425 x M2x625 x M2x825 x M2x10Female-Female Standoffs:25 x M2x4+325 x M2x6+325 x M2x8+325 x M2x10+350 x M2x4 Nickel Steel Pan/Round Head Screws50 X Nickel Steel Hex Nuts