Size: 6#-32, 3.5 coarse thread, compatible with most computer cases on the market | Constructed of quality anodized aluminum, great grip, lightweight, corrosion-resistant, scratch-resistant and durable, ensuring a longer service life. | Easy installation and simple removal, knurled Head design provides frictional force allow to be tightened by hands without any tools. | Suitable for most desktop computer, ideal for computer case, PCI slot, or motherboard mounting, providing fastening performance | Package comes 10pcs gold Anodized Aluminum Thumbscrews.