Finally, a hand trainer where you can really finely adjust the resistance. I've been climbing for three years and already notice a noticeable difference in my grip strength after just four weeks.

Very solidly made and the spring gives a high-quality impression. Perfect for my father after a hand injury because he can start low and increase slowly.

More compact than expected – fits easily in the jacket pocket. I use it at my desk during lunch break. The adjustment screw doesn't lock, but that hardly matters in everyday use.

Good value for money. The handle feels comfortable in the hand, no pressure points even after longer training sessions. Fast delivery, well packaged.

As a musician, I regularly train my finger muscles – this trainer is much more versatile than simple coil springs. The orange steel spring looks sturdy and delivers on its promise.

I bought it as a gift for my husband, who works out at the gym. He is thrilled and uses it daily. The quality is good, I am very satisfied.