I made this Fitt-get to exercise your hand, like pinching. You can also press the thumb against the knobs as exercise. The Fitt-get also spins in the middle. Two hands pull and push is also an exercise.The design can handle a lot of stress.

• Hand training
• great after an hour computer mouse use, etc
• Thumb training
• spinning gadget

In petg the fitt-get is a bit more flexible and lighter to use.