√ Material: High Quality brass and steel, which have superior rust resistance and the excellent of oxidation resistance, which can ensure long time using. | √ Size : Total 10 different computer pc screws, different screw can meet your different needs, perfect for PC case, power supply, motherboard, hard drives, fan and floppy/CD-ROM/DVD-ROM drives fixed installation | √DIY SCREW SET: You will be able to find the right screws for installing or repairing an internal CPU disk, motherboard, radiator, cooling fan, power tower, graphic card, hard drive, case, monitor, flat panel screen, or CD-ROM. | √ Package includes: Thumb screws: 20 pcs; Conventional chassis fan retaining screw: 60 pcs; CD-ROM set screw: 50 pcs; Chassis high-strength screw: 30 pcs; Hard drive screw: 50 pcs; Main board brass standoffs screws: 30 pcs; Main board fixed screws: 50 pcs; Main board insulation gasket: 50 pcs; | √ Widely Applications: Great to build, repair, or mount PC case, motherboard, power supply, hard drive, fan, CD-ROMs, DVD-ROMs, graphic cards, and other electronics; Compatible with most desktop computers, Whether you are a PC building hobbyist or a professional tech, this set of replacement screw accessories is a necessity and the quantity should last for several projects