Types: 360 Pieces. 10 different computer screws, perfect for computer case, power supply, motherboard, hard drives, fan and floppy/CD-ROM drives fixed installation. Material:Made of high quality metal, rust resistance and excellent oxidation resistance. Widely Applications:Perfect for computer case, power supply, motherboard, hard drives, fan and floppy/CD-ROM/DVD-ROM drives fixed installation, they are placed in a box, easy to find and use. DIY Assortment Kit:Whether you are a PC building hobbyist or a professional tech, this set of replacement screw accessories is necessary. Premium Material & Perfect Fit: these computer replacement screws are durable, and reusable. It fits almost all kinds of computer types and help you repair them efficiently. Size Chart: Shown as Pictures Package Includes: 360 Pieces Computer Screws Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!