It's nice, but you need to be Hercules to grip ...
934011
It's nice, but you need to be Hercules to grip the bottle hard enough to use the spray with one hand.
3197390
works but you really have to play around with it to get it fit properly
2496438
It looks really nice. I have it displayed on my shelf right now, and I think it looks really cool. It comes with multiple hands that you can switch out. It's a pain in the butt if you do decide to switch them. The extra hands don't fit well. I can't get them all the way on, so I'm careful to not knock them off. I was worried that I might break the thing by trying to use all my strength to fit the things together. Besides that it's a good figure.
433045
The grip is a little too thick for me. It's really light (foam-like) which I didn't expect.  You also have to tighten the screw a lot more than you think to keep the rope from coming out.  It serves it's purpose though so I still use it!
4964955
A bit awkward, but, I must have it for my arthritic hands.
2542956
Very nice, but you'd better have very skinny forearms or they won't fit.
718598
Aw yea brah! You can feel the mighty power as you develope that Popeye like forearms look. This will get you crushing walnuts in your bear hands in NO TIME!

Seriously though, its a good quality trainer and great for increasing my rock climbing grip strength.
1257837
Its a damn good quality vest, but I found that it was very hard to keep the straps tightened without my own modifications with superglue and Velcro Tape. Also: DO NOT BUY THIS IF YOU ARE SKINNY. Hell, I'm 6'1 215lbs with BROAD shoulders, and this thing is LOOSE on me when fully tightened down... but it is made of a very good quality fiber, straps, and buckles so, its a trade-off...
3669813
I really like this grip and it looks fantastic. It's a bit squishier than I was expecting, but that is a benefit to your hand after a couple hours at the range. But that also probably means it's not the best option for drawing from a holster like a hard grip. Although giant revolvers aren't the best conceal and carry weapon anyway.

My only real complaint is with the install screw. Be careful when screwing that thing in because the screw passes through a tinier rubber hole on the grip that the screw tore up a bit. Created a bit of an ugly lighter colored ring on the side of the grip itself. But if you turn slow you probably won't have the same issue.
1016422
It's nice although it's hard to pick up with the grips because of being too shallow. Also kinda stiff to expand all the way up. Maybe it will be easier with use.
2559229
I got this to strengthen my fingers for guitar playing. I have to say it definitely takes some serious grip to use. I strongly considered getting the yellow model with lighter tension (3 lbs), but after a little research opted for the blue model with five pounds per finger. I'm okay with it, but I do think the lighter tension model would have been easier for my two smallest fingers. My two smallest fingers are the weakest and can only slightly move this 5 lbs of tension. That's why I think for my purposes, I would have preferred being able to move and strengthen all the fingers. I would suggest researching the models on the internet and reading about them before you buy. Also if you are like I was with doubt about your hand/finger strength you should probably go with the lighter tension model. Overall the Gripmaster is made very nice and serves the purpose. I have no complaints with the product. Just know your abilities.
4706747
Being a taller guy, I really appreciate the extra rope length. It is slightly thicker than some of the lighter ropes I've used before and I think between that and the extra length it "feels" heavier than some lighter weight ropes, but it's not bad at all. I think I read some other reviews that mentioned they weren't fans of the "grippy" part of the handle. They get pretty slick once you have a good sweat built up, but nothing a little extra grip tape can't fix.
4715020
The material is almost a little to thick. So you have a good grip-training parallel to the back-training. If you don't want that I can't recommend them. But if you don't care or if you also think this is beneficial, go for it. I like the grips.
3667537
Three things to consider when purchasing this grip. 1. You have to remove the grip to remove the SD card. 2. Removing the grip forces you to bend the delicate-looking little cord used to connect the grip to the camera. As far as I can tell nobody else makes this type of cord and Kaavie doesn't sell replacements. My solution is to use the biggest card possible and remove the grip as infrequently as possible. You could also directly connect the camera to a computer. 3. There are no dials on the grip to control aperture or shutter speed. This doesn't bug me as much as I thought it might for some reason.

Otherwise it's light, fits well and allows the use of a second battery. Not bad for the price and it definitely improves the Df ergonomics when doing verticals or when shooting for a long time.
4128846
If you're not handy with a drill, I'd recommend you have someone who is, install this for you. Just because it's so important to get the screws perfectly level and straight in order to be able to remove the bar easily. But even with a perfect fit for all of the screws (credit goes to the friend who installed this for me) my bar doesn't want to pop out of the brackets now and I know I'll have a hell of a time removing it once I move to a new place soon.

That said, the bar is rock solid and holds my weight (185lbs) pretty well, with minimal bend. I was hoping the door frame would be wide enough to allow me to do pull ups as well as chin ups, but I think the fit is a bit too tight and my grip would have to be too narrow for comfort. I still am not able to do a single pull-up tho, so I guess I'll know better once I manage a couple.

For chins alone, this bar is amazing and I like seeing what this exercise does to my upper body, specially my arms and lats.

If you don't want to drill holes in your frame, look elsewhere but if you don't mind, this is a good product for the price.
835507
I bought this grip because of the vertical position of the head. The trigger handle works nice, but if you have to carry the tripod anywhere this has a tendency to snag on things. The tension on the ball seemed fine during the few times I used it, but couldn't figure out how to adjust it if I needed to. And the plate is a custom plate that doesn't work with anything else, so makes it hard to switch out gear if needing to.
2508936
Overall, the product is strong and well-made. The included grips are amazing and you can certainly feel the improvement after a few sessions. Not to discredit the design but for my body shape, the curl does not exactly fit. I'm a heavier set male (250lb) and have a wider frame than the average person, so it becomes a little uncomfortable forcing my elbows to an inward/straight position. Add weight to that form and the support starts to dig into the back of my arms. I can still complete my reps but I would have preferred a wider/longer version of this that can keep my elbows at a more comfortable angle. This is more of a preference than any fault with the product.