134pcs Computer Screws Kits for Motherboard PC Case Optical Drive Hard Disk Laptop Fixing Package includes: 4 PCS hand screws 20 PCS chassis power screws 20 PCS chassis hard drive screws 20 PCS chassis motherboard screws 10 PCS chassis fans screws 20 PCS CD-ROM screws 10 PCS motherboard iron stud 10 PCS motherboard copper stud 20 PCS insulating spacer