FitBeast Grip Strengthener Forearm Strengthener Hand Grips Strengthener Kit - 5 Pack Adjustable Resistance

This is a great kit. It feels durable, it’s really helpful, the finger stretcher is a little small, but everything else works great. Everything fits great in the carry bag. I love the adjustable resistance. Good price. I would highly recommend.

The tension on the springs is very weak, cheap quality

Good quality

Does exactly what it claims to do. I’ve used it on and off over the last month and have noticed a slight increase in grip strength. The main gripper ranges from small resistance to a lot, so I’d imagine this will be enough resistance for most people (excluding babies and bodybuilders). Comes with 5 instruments, which are all decent quality. Some of the mechanical ones make funky sounds, but none have broken or show any signs of exploding, so that’s good. Main complaint is that the grip trainer isn't very comfortable. But it’s lightweight and portable. I bought it on sale for like $8. Reasonable price would be $10-20. If you can get it in that range, I’d say great, it’s worth it.

The product broke after some use. The shock was when I looked at the broken parts they were all made of plastic without any metal.