Screw Type: M2X3, M2X4 , M2X5, M2X6, M2X8, M2.5X3, M2.5X4, M2.5X5, M2.5X6, M2.5X8, M3X4, M3X5, M3X6, M3X8, M3X10 each 30PCS. Laptop Screw Kit: The screw undergoes oxidation and blackening process, which greatly prolongs the service life of the product. Portable: Laptop screws are put into the storage box according to the specifications, and size instructions are provided at the same time, which is convenient for you to choose during use. Material: Made of high quality carbon steel, sturdy and , 450 pieces in total. Applicability: Suitable for all kinds of laptop repairs, compatible with all kinds of general purpose laptops. #154 in