Perfect for any computer enthusiast. These thumbscrews provide easy access to the most commonly used parts. These thumbscrews are professionally anodized, not some cheap imitations. Our aluminum or steel anodized thumbscrews feature a larger head, which provides better grip and allows easier access to components. Use these thumb screws to turn your computer cases into a convenient box with tool-less entry! Very useful for class rooms, tech benches, and show rooms where you may need to open and close the covers of your cases often. Once you have the thumb screws, you dont have to use a screw driver to open your case any more. All you need is your fingers. Three types shown in picture. One per unit price. Actual one shipped may vary without notice. These are universal (standard) screws. They should work with most if not all computer cases including enlight, in win, fki, psi, hon hai (foxconn), antec, suntek, and other generic brands. They should also work with compaq, nec, ibm, dell, gateway, toshiba, packard-bell, and other branded systems. Yes, you may also use them for fixing add-on cards such as video cards, modem, and sound cards to your motherboards, making it very convenient to remove and change add-on cards.