a computer tape reel carrying and storage device having just ten parts , all of which are paired identically . most of the parts are of plastic and the identical pairs be molded in the same mold . the parts may easily be assembled to form a cylindrical body having a flange at its lower end and a movable handle at its upper end . the handle moves from a retracted position for loading or unloading to an extended position for locking the reels in place and facilitating the transport of the device and reels .