This is a cord organizer that allows for length adjustment and neat storage. Insert the cord in the middle of the part you want to store and turn the rotating plate to wind up the cord. To remove it, simply pull the cord or turn the rotating plate in the opposite direction of storage, and it will easily come off, allowing for smooth cord length adjustment. Photos 3 and 4 show how it was used to store a printer cable. Just insert the cord and wind it up. Length adjustment is also easy. Size: Diameter 5.5cm This item is also listed elsewhere and may be suddenly removed.