Power Web Combo Hand Exerciser has an unique, patented design which allows duplication of virtually all joint actions comfortably and effectively, including flexion, extension, opposition, abduction, adduction, pronation and supination. The resistance of each web can be modified to meet specific needs by adjusting hand position and/or depth of finger insertion. Both hands can be exercised at once, or a single finger isolated and exercised. The Power Web Combo Hand Exercise is constructed of high-quality rubber with special agents added for durability and strength.