This computer screw set is made of , which can withstand use. Features the metal material, which has high durability, not easy to deform. Fine workmanship, practicality. Features -Color:Assorted Color -Material: metal -Size: 1.00X1.00X1.00cm/0.39X0.39X0.39in - The washer works as great buffering between screw and computer case. - Thumb screws are perfect replacement for damaged or lost computer case fixing screws. - This computer screw bracket kit is DIY PC assembly enthusiasts or PC repairers. - Countersunk design screw, neat and clean, the surface is even after installation. - It is manufactured with technology to ensure the of the product and can work for a long time. Package list: 4 x black thumb screws 8 x N3x6 copper pillars 12 x M5x10 black fan screws 10 x M2.5x5 hard drive screws 10 x .5x5 hard drive screws 20 x rubber rings 20 x gaskets 10 x M3x5 motherboard screws 10 x black PCI screws 10 x silver PCI screws