Total 10 different computer screws with 420Pcs in high quality. Different screw can meet your different needs. Perfect computer screws for ssd, hard drive, computer case, power supply, graphics, motherboard, pc fan, CD-ROM drives, for DIY PC installation or repair. Material: High quality brass, steel, fiber paper, black zinc plated and steel with nickel. Offer superior rust resistance and excellent oxidation resistance. This computer screws and motherboard standoffs kit are perfect fit for DIY PC building hobbyist or a professional PC repaire & installation. Excellent laptop computer repair screws kit is fit for many brand of computer, such as Lenovo, MSI, Dell, HP, Acer, Asus, Toshiba, etc.