GD Pro-70 Hand Grip Strengthener (Adjustable : 55~154 lbs) Hand Strength Trainer Wrist and Forearm Training Equipment Hand gripper

I bought this grip so many years ago that I don't even remember if I bought it on Amazon. I have been using this regularly since 2012 or 2013 and it is working fine so many years later.The wheel can make it heavier (S- stronger) or lighter (W- weaker) and the mechanism is still working properly. But be aware that you can only adjust it in general Heavy/Light steps, you will not be able to set precise weight. But as an auxiliary exercise or a substitute for stress ball, it works well.It has helped me increase my grip strength, so much so that during a routine fitness test, the nurse asked me to perform the grip strength test three times to make sure that their calibrated instrument was indeed right.I don't remember how much I paid for it, but anything that can last more than a decade is worth the money.