Tips: Due to different monitors, shooting light, environmental factors and other reasons, there are some color differences that exist objectively and cannot be avoided. But usually does not affect the use of the product, if you mind these, please consider carefully before buying. thank you! Available / Optional Color:, Green, Wine moderate price Red, Orange, Fushcia, Black, Silver Tone, Gold workmanship Tone, Purple, Sky BlueThumb screws are designed recommended to be tightened and loosened by hand.They have an easy grip head that allows for simple by hand installation, just like conventional thumb screws. The large thumb screw has an extra large head with a straight knurled surface for additional grip for manual adjustment.These quality crafted thumb screws provide quick installation for securing cases and can easily be tightened by hand without much force.Can be used for computer pc case, computer pc graphics card, hard drive.0.