Digi-Flex Multi Clinic Pack, 8 Frames, 2 Four-Base Racks, 32 Buttons (4 each: Tan through Gold)Digi Flex Multi Clinic Pack, 8 Frames, 2 Four Base Racks, 32 Buttons (4 each: Tan through Gold) The Digi Flex Multi hand exerciser develops isolated finger strength, flexibility and coordination. Interchangeable finger buttons make the Multi a truly versatile exerciser. Use each button independently to exercise fingers or compress the entire unit for complete hand and forearm strengthening. Change resistance for any finger by changing the finger