GRIPZILLA Dynamo Forearm Strengthener and Wrist, Comfortable Grip and a Durable Design Roller Perfect for Men and Women - Ideal for Hand, Wrist, and Forearm Strength Training, Workout - Wrist/Arm Builder

I must admit this is an impressive device. Super simple to use and ready to go out of the box. This is a very well made and durable product. This will make your forearms scream. Super effective and I am noticing growth and strength improvements in a short period of time.

It is fantastic. Not only does it build your forearms it builds your whole body. Your body and core have to brace itself to twist. The bar. Great isometric training. I did to failure 2 weeks Straight and made a nice difference in my upper body. I grip from all angles standing sitting lying down. It tested everything I had. And yes my forearms are bigger.

Excellent product if you want to build your forearms. I am 240lbs 12-15% bf at 5’10 and this offers progressive overload, as it has levels I can’t handle.

It does work. The exersize can be performed as is effective. I dont like the design and materials.

This thing is amazing. Not cheap but in my opinion worth every penny. Easy to use, almost infinitely adjustable difficulty, compact and convenient to travel with. I’m using it every other day for a few mins as I’m unwinding and watching TV. Built like a tank.

Gripzilla really works. Excellent product and well built for the long haul. A+

Love this exercise tool for grip strength and forearm strength. Well worth the money. I use this every night before bed and have notice my strength go up because you can adjust the tension as you get stronger.

This is a useless piece of junk. There’s only extremely tight and very loose settings. No ability to fine-tune tightness and the knobs on each side are oriented in different directions so it doesn’t sit flat and makes it harder to ‘calculate’ the level of tightness. But this isn’t possible either way because of what I mentioned before. Maybe this is a broken unit? Not sure what would be broken though. Not happy, that’s for sure and I feel like the ads are paid ads because they alluded to features and an experience that just isn’t possible or replicable based on what I received.

Ist sehr effektiv, aber auf gripzilla kostet er nicht Mal die Hälfte!

The rotation movement is not smooth enough and the grip is very tough and you will need to wear a gloves if you are planning to use it for a long time, but for ten or twenty rotations you will be ok

Received this today. Out the box it's ready to use. Adjustments by way of two wing nut type fittings, so easy. First impression is it's very well made, light to handle, and the grips are textured so as to enhance the grip. So.. to using the item. Oh my, straight away you can feel it working, you feel the burn. Wow, very impressive bit of kit. I think because it is so convenient to just have handy, you can literally use it whilst watching TV or just sitting with a bit of time on your hands, therefore you do more reps than you think, due to its convenient size. Comes in a nylon zipper bag should you wish to take it on your travels or to the office, out walking, wherever. I would say a lot are put off by the price, and I must say, I did hesitate myself, but took the plunge and am very, very pleased, so for me, I will say it's value for money and certainly gives you a workout.

Good for forearms training.

Solid product - use it while watching tv