Very easy to use for dumbells
936204
These small spring clamps are great for ease of use on dumbbells. Changing weight is a snap and they hold adequately for any exercise motion you may want to try.
937112
Quick and easy to use. I would be a bit cautious using on heavier items though, even though the larger hooks are rated for this purpose.
2475041
Pros:
Very quick and easy to use.
They hold very tightly.
Been using for several months and they are holding up.
Low profile is nice for adding extra plates outside them for increments.
Small enough you can pack in your gym bag.

Cons:
They are a little tough to clamp down at first, but this seems to have gotten easier with use.

Over all, I'm happy I got these.  Their a nice addition to my home gym.
1500130
I own a bowflex so I wanted something that I can do squats on as well as use the bench and do presses with.  This is working perfectly because I can move them easily for any exercise.  One thing you need to get used to on doing squats is that if you like to just push the barbell into the squat rack, you can't just do that on this because they'll tip a little.

For bench pressing I like the added hangars so I've got it set for benching and then can easily move for squats without any alterations.  Would highly recommend this for anyone wanting to do some barbell work.
4354361
Love this.  Low cost and hold lots of dumbbells.  Very sturdy.  Very pleased with it.
1771096
These things are very high quality and work great if you are limited in space.  It is like having an entire set of dumbbells.  Switching between the weight amounts in quick and easy.  I am using these along with the P90X program and I have plenty of time to make the switch to different weights before the next exercise begins.  I would highly recommend these dumbbells to anyone else interested in a good dumbbell set who does not want to purchase an entire set of individual dumbbells.  The price is a little steep but I already feel it has been well worth it.  Buy these things and get to work.  You will see results.  Bring It!!
1968759
I had a pair of 20lb Dumbbells but with bare metal and found them painful to use. So I looked for a pair coated like some of my smaller weights. This set was just what I was looking for. Much more secure and comfortable to use.
4586283
I was struggling to control a 50 lb dumbell until I got this is a sturdy bar with excellent grips.  I love it.
4833291
Easy to mount and very convenient. I figure if the foam padding tears, I'll replace it with some racket tape. The wide outer grips will really work your lats and the two parallel grips on the front are great for biceps.
2835663
Framers of small to medium size frames will find this tool very easy to use. Has plenty of leverage to easily install almost any type of fastener for frame backing. Very reasonably priced. Magnet works for initial hold of most fasteners with minor adjustment on start of push.  Allows you to put even pressure on the backing as you squeeze smoothly to push the fastener into place. You do need a brain to operate it however.
4518513
I have smaller clamps and needed these for larger projects. They work very well and are easy to use, would recommend quick grips.
1626711
A much more convenient way to work on abs, biceps and tri-cepts than cumbersome weights, especially since I use weights at gym 3/4X a week, this tool is for home use.
1895110
This is a very easy to use simple tool. Took under 10 minutes to adjust a bent rear derailleur hanger and restore shifting to better than new.
2883700
I was looking for an affordable no frills dumbell and that is what this is.  It's the weight that I wanted and it is not designer but it is affordable and gets the job done just as well as anything all shiny and pretty would.  I like it so much that I have ordered a second one.  GOOD DEAL AS FAR AS I'M CONCERNED.
4432456
nicely coated so they don't hurt my hands or floors. The stand isn't super sturdy, so don't expect to be able to throw the dumbells at it. It is also a bit of a tight squeeze to get some of them into the slots. Overall, great for home use, use the stand for between-workout storage, not to hold the dumbells while you are using them.
2492433
I live in an apartment so anything that saves space is very valuable to me. I work out often at home using workout routines like P90x. I prefer to work out at home rather than go to the gym and these dumbbells are perfect for me. They are pretty easy to use, you just turn the dials to the weight you want and lift the dumbbell off the base. That's all there is. Saves so much space when compared to all of the different dumbells you would need to get the same amount of weight combinations.

During my workouts I often switch between light and heavy weights. For instance when working on shoulders I'll use around 35-40lbs for shoulder presses but when doing straight arm shoulder flys I'll use a weight around 12.5-15lbs. Using these I can quickly switch to a heavier or lighter weightload. The lightest it goes is 5lbs and the heaviest is 52.5lbs.

Several reviews on Amazon say that these are not safe or the plates can fall off. I have been using these 4 days a week for 7 years (since 2009) and have never had a plate fall off. That being said I have never thrown these on the ground (apartment below me would probably have me evicted if I did) and I know some people at the gym will just drop weights from high distance, so if you're doing that then the plastic parts will probably degrade over time. But like I said I work out with these very often and mine are still going strong years later.

I have on occassion had an issue where I couldn't turn the dial and if the weight is not properly dialed you can't lift it off the base. This happens when one of the plates is not aligned properly. You can fix that by trying to shift the plates individually while still on the base and when you shift the problem plate back in line the dial should get un-stuck.
4464638
Easy to use hand grip strengther.  Great for my weak grip.