Assortment of 11 Common PC Screws and Jumpers - 650 pieces in 1 storage container The StarTech PCSCREWKITMC is a handy assortment of common PC fasteners for building, repairing, and maintaining computer systems. The kit includes 11 different fasteners all in a plastic carrying case with divided compartments. Includes 50 screws in each of 7 category types for a total of 350 screws as well as an assortment of jumpers.