Cando ®  Digi-Flex® Finger Exerciser
Develops isolated finger strength, flexibility and coordination
Stronger fingers cannot compensate for weaker ones
Progressive, color-coded resistance gives positive feedback
Use each button independently to exercise fingers, or compress the entire unit to complete hand and forearm strengthening
Comes with illustrated manual

Available in 5 different resistance levels:

Yellow- Extra Light Resistance  - 1/1/2 lb finger force- 5lb hand force

Red- Light Resistance-    3lb finger force - 10 lb hand force

Green- Medium Resistance - 5 lb finger force- 16 lb hand force

Blue- Heavy Resistance-      7 lb finger force- 23 lb hand force

Black- Extra Heavy Resistance  - 9 lb finger force - 31 lb hand force