JADA Metal-Hook Gripster, 2PCS Upgraded Finger Strengthener, The Gripster Strength Trainer and Hand Exerciser, Gripster Forearm Trainer, Hand Gripper with 6 Resistance Levels

I love using this thing! Whenever I have down time, I use it to help strengthen my grip. I only just started using it, but I feel that my grip strength is improving and it's a nice forearm exercise as well. My only issue is that the hole for the thumb is a little small, but it still works even if it can't go entirely on my thumb.

I suffer from weak wrists and hand injuries often and I was looking for something to gain and improve strength and stability, this has helped me to build and exercise some of that strength

I think it does it's job, we got this for my son who is very active in sports both football and basketball and for someone in middle school this works well for him, he has smaller fingers and fits well. This doesn't fit as well for people with bigger fingers and hands. This feels like really good quality the rubber around the fingers are really thick and durable, it is easy to adust for greater strength, the pin holes look small but easily expand to fit the wrist wrap. The wrist wrap is easy to adjust and that works with bigger wrists.

I started using it and it broke just a few minutes in, I don't know if I was just doing it wrong, but none the less it shouldn't just snap like that.

My son who loves to rock climb just sits around watching TV using this thing to strengthen his grip. Seems to work well and he picked it up quickly and easily.