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

Like this. Use it regularly. Adjusts easily. No problems.

Delivery was smooth. Kept package dry even though it was raining 👍

Pros:- Grip is very good, soft for your skin. It will not give you callus (at least for me)- strength adjustable- style/design looks goodCons:The strength adjustable gear keep moving to less strength half 1/8 of inch every set of 30 grip. So I have to put something it will lock to prevent turning to less strength.Conclusion: I still want to keep this since I like the grip handle and this is the best option I found here in amazon for now (at least for me). I’m ging 4 star because of the style and grip handle, and I can still put some tape to lock the preventing to turn.

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

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.

Sturdy, easy to adjust, good resistance

The knurled, thumb wheel is impacted by a metal arm lobe that rolls as you squeeze the trigger.Well, metal to metal movement = Oil or Grease to prevent wear and noise.Since the wheel is fixed in position after adjustment, it's not long before you have metal to metal contact and a growling sound and obvious wear.So I have some very high end grease which I applied to the facing of thumb wheel and rotate it slightly to keep a greased contact point.It could get messy if it comes into contact with various cloth surfaces such as a blanket, etc.That is a design element that physics demands lubrication.Also, the pin just above the back arm works its way out as you use it.It hasn't completely popped out, but I have to keep pushing it back in.