GD Grip Strength Trainer (Premium Adjustable Grip Strengthener for Forearm Training) Wrist and Forearm Strengthener

These are the best designed grip system I've used. I'm 62 years old but have vice grip hands. Most will never max this out. Easy to use and made well. Smart design. I remember the old days of the coil and to hand grips, or the single springs you could add or subtract, but nothing like this. Well priced for what I consider a great designed and quality product.

Very Professional feel. Adjustable grip width at all pound settings was exactly what I was looking for.Works Great

Over the last year I purchased a few similar grip strength trainers and this is by far my favorite. it has a sturdy construction that feels nice in the hands, but the one feature that really sets it apart are the rubberized handles. The other ones like this that I have tried were just plastic or metal handles, and when I started using them for higher resistance, the grip would slip or it would get uncomfortable to use. The rubber grips add a little bit of cushioning and some grip so the trainer stays in the same spot in your hand your entire workout.This trainer has a button activated rep counter, which registers each rep when you fully compress the handle. Nothing earth shattering, but it works well. The trainer is also easily adjustable using a large metal dial and a smaller knob at the front to adjust spring tension and handle travel. My only wish for this would be more detailed resistance markings on the trainer. To determine the amount of resistance you need to count the number of dial and knob turns and note the position of the handle and compare it to a chart on the package to get a rough approximation of the amount of resistance you are dealing with.Overall this is a great option for a grip trainer. The spring give a consistent resistance throughout the pull, it is comfortable in your hands, and easy to adjust.

Sturdy, easy to adjust, good resistance

I've had my GD Grip Ultra 70 exerciser for a little more than 6 years. It is very durable. I especially like how the grip handles stay parallel throughout the exercise. Both the resistance and the grip size are adjustable. The front black knob adjusts the resistance while the silver wheel adjusts the grip size.When the front knob is turned, the spring compression is changed, changing the resistance and moving the bolt forwards or backwards. That also moves the silver wheel the same distance which changes the grip width, which then must be readjusted. For instance, if the front black knob is adjusted 1/2 turn clockwise to increase resistance, that moves the bolt forward and compresses the spring. Then the silver wheel must also be turned 1/2 turn in the same direction to maintain the same grip width as before. Otherwise, increasing the resistance will decrease the grip width making it generally easier, while decreasing the resistance will increase the grip width which makes it generally more difficult. So, the key is to turn both the front knob and the silver wheel the same amount and in the same direction to keep the grip width the same while changing the resistance.Turning the silver wheel to widen the grip will also increase the resistance. This occurs because as the grip gets wider, the cam pressing against it to compress the spring moves horizontally and feels the full force of the spring. When the grip is narrower, the cam moves at a more downward angle giving a mechanical advantage over the wide grip when compressing the spring. It also means that as the grips move closer together, the required force to close the grips becomes less. So, the resistance level isn't linear over the full grip range, though this isn't obvious when using the device.Things that could be better:1. The grips are hard plastic, and at higher resistance level might be a bit uncomfortable and a bit slippery. Workout gloves should help with comfort when needed and friction tape should help with slipperiness.2. The front knob resistance adjustor doesn't stay set very well. It is just a nut on a bolt. When the grip is flexed, the nut moves forward and can easily turn on its own, changing the resistance. If you like to work with progressive resistance, that will undermine the effort. I wound Teflon thread tape around the bolt 15 or 20 times (it's thin) and then put the nut on. That gives it enough resistance to keep the nut/knob from turning on its own while still allowing it to turn easily for adjustment.I highly recommend this grip exerciser for its stable, parallel handles during use, and for its resistance and grip width adjustability. It has a wide range of resistance, though the lightest resistance might still be too strong for many women and boys.