Flexion for each individual finger as well as the entire hand! Develops isolated finger strength, flexibility and coordination as it builds hand and forearm strength. Use each button independently to exercise fingers or compress the entire unit for complete hand and forearm strengthening. Progressive color-coded resistance gives patient positive feedback. Comes with illustrated manual. Unit measures 3.5 x 3 x 1 in (8.9 x 7.6 x 2.5 cm). * Force required to compress finger.