Power web finger hand wrist-

for developing strength, dexterity and range of motion
Resistance of each web can be modified to meet specific needs by adjusting hand position and/or depth of finger insertion
effective exercisers can be utilized for hard-to-imitate joint actions such as forearm pronation and supination, finger extension, thumb opposition, and more
Accommodates all hand sizes and strength levels

https://youtu.be/RG_rI_4zjcw