Features: 1.Material: Made of high quality carbon steel, sturdy and durable, 450 pieces in total. 2.Screw Type: M2X3, M2X4 , M2X5, M2X6, M2X8, M2.5X3, M2.5X4, M2.5X5, M2.5X6, M2.5X8, M3X4, M3X5, M3X6, M3X8, M3X10 each 30PCS. 3.Applicability: Suitable for all kinds of laptop repairs, compatible with all kinds of general purpose laptops. 4.Portable: Laptop screws are put into the storage box according to the s, and size instructions are provided at the same time, which is convenient for you to choose during use. 5.Laptop Screw Kit: The screw undergoes oxidation and blackening process, which greatly prolongs the service life of the product. specification:Item Type: Laptop Screws Material: Carbon Steel Quantity: 450pcs Screw Type: M2X3, M2X4 , M2X5, M2X6, M2X8, M2.5X3, M2.5X4, M2.5X5, M2.5X6, M2.5X8, M3X4, M3X5, M3X6, M3X8, M3X10 PackageList: 30 x M2X3 30 x M2X4 30 x M2X5 30 x M2X6 30 x M2X8 30 x M2.5X3 30 x M2.5X4 30 x M2.5X5 30 x M2.5X6 30 x M2.5X8 30 x M3X4 30 x M3X5 30 x M3X6 30 x M3X8 30 x M3X10 1 x Screwdriver 1 x Storage Box