The NÜOBELL Adjustable Dumbbells are the quickest adjusting dumbbells we've ever tested or reviewed (and we've used a lot of them.) There are many adjustable dumbbells on the market with more being created every day, but there's no doubt that these stand out among most. Despite the ease of adjustment and relatively high weight increments (80 LB) we don't feel like these are better than Powerblocks or Ironmasters for most people.

Quick Adjustable Dumbbells
NÜOBELL Adjustable Dumbbells
NÜOBELL give you the convenience of all-in-one adjustable 5-80lb dumbbells that are easy to use and have superior durability thanks to its machined steel weight plates. This set of innovative dumbbells will quickly become your go to favorites. These are sold as a set of 2 x 80lb dumbbells Weight Range lb 5-10-15-20-25-30-35-40-45-50-55-60-65-70-75-80 The material is steel and plastic Net weight: 80lb Includes portable cradles for both adjustable dumbbells. 

NUOBELL Adjustable Dumbbells are far from being the first adjustable dumbbell to hit the market for home gym owners. We’ve been recommending adjustable dumbbells for years and even view them as a home gym essential. What NUOBELL has done is created an adjustable dumbbell that is one of the easiest in the world to change weight increments. It’s not perfect and there are certainly things we’d change (recommended later on,) but, there is not a set of adjustable dumbbells that change between weight increments faster than these.

What are the NÜOBELL Adjustable Dumbbells?

The NUOBELL Adjustable Dumbbells are one of the newest options for people looking to save space in their home gym while retaining the functionality of an entire set of dumbbells. These traditional shaped iron dumbbells replace 1360+ pounds of normal dumbbells which allows you to save space and money when building your personal setup. 

With an easy click-lock handle, you simply rotate until you see the desired weight on the indicator and then you can pull that weight out and do your exercises. The pancake-style disks remind me of pro-style iron dumbbells that could be found in most commercial weightlifting gyms. Coming in 50lb, 80lb, and 80lb tactical options, this dumbbell by SMRTFT looks to challenge the adjustable dumbbells such as Powerblocks (see our Powerblocks Dumbbells Review here) and IronMasters that have been on the market forever. 

Wait, Arent’ These Just…?

You may be asking yourself, “wow, these look a lot like these other adjustable dumbbells that are on the market?”

And, you’d be right.

There are quite a few adjustable dumbbells that use this similar design. How that became so, I have no idea. I’ve tried asking multiple company representatives for patent information and pretty much every single one says they either hold the patent or license it from someone else they cannot name who does.

Regardless, here are dumbbells that are using a similar design.

  • NUO Flexbells Adjustable Dumbbells
  • MX Select Selectorized/Adjustable Dumbbells
  • NÜOBELL Adjustable Dumbbells
  • FlexBells Adjustable Dumbells
  • Core Home Fitness Adjustable Dumbbells

I’m not claiming that these are all the same. But they are all using a similar stand and mechanism for changing between weights. The max weights range as do some of the details and, of course, their price.

What We Like About the NÜOBELL Adjustable Dumbbells

The NUOBELL Adjustable Dumbbells completely serve their purpose as adjustable dumbbells. I have yet to see any other dumbbells that are as quick and easy to adjust as these ones. With a simple twist, changing the weights takes seconds at most and the easy to read dial makes it easy to know which weight you have switched to. Perfect for drop sets or working out with your significant other, these dumbbells may be the most ‘adjustable’ dumbbells on the planet.

The more I think about it, the more I realize how silly a full set of dumbbells is in a home gym. Without a doubt, whether you have a gym in your house or in your garage, adjustable dumbbells are simply the best option.

With some initial concern over the quality of the NUOBELL’s, I was pleasantly surprised by the mostly steel construction. Whereas many similar shaped adjustable dumbbells have largely plastic designs, SMRTFT was able to construct these with the aesthetically pleasing stack of pancake plate design. The design that the company went with really keeps the feel of these dumbbells quite natural as you feel like you’re still using a traditional dumbbell. This is highly appealing for those who don’t want to deal with more square-shaped blocks like the Powerblock or Ironmaster models.

Another feature that I really liked was the knurled handle that the company used for these dumbbells. Unlike many dumbbells that used contoured handles with rubber or foam grips, the NUOBELLs use a barbell type handle with a quality knurled finish. This handle makes these dumbbells really appealing to people who normally do barbell movements because you will get to train with the same type of feeling you get from a barbell.

These dumbbells come in both a 50lb and an 80lb option, so they work for 90% of the population. With a really clean finish and some very aesthetically pleasing stands available on their website, these dumbbells could sit in your living room without sticking out like a sore thumb.


Overall, these dumbbells are very functional and very visually appealing. Originally wary of the quality, I was pleasantly surprised when I used them for a few workouts. With the current demand for adjustable dumbbells still high, It is likely that these will become a staple in many people home gyms as you are unlikely to find other 80lb adjustable for this price during the equipment shortage.

What We Don’t Like

Although extremely functional and very visually appealing, these adjustable dumbbells are not without some flaws. The mostly metal construction is very nice, but hard plastic connecting pieces raise serious questions about long term use. In activities where lots of weight is being moved at any speed, the hard plastic that connects the iron plates serves as a major weak point. It would not be unthinkable that these parts could crack if the dumbbells were dropped from normal heights. With so many important pieces being made from plastic, I would be very interested to see how they function a couple of years down the road.

With the connecting pieces being made from plastic, the locking mechanism and weight selection devices also use a lot of plastic. These don’t seem at risk of breaking, but it seems that over time, they could see wear that prevents them from functioning properly.  In any high traffic gym, you would engage the weight selecting mechanism in these dumbbells thousands of times over, which could lead to some issues with performance. This is a problem I see a lot in the Bowflex 552 and 1090 models. The plastic selector would often break after long term use and you would be left with a non-adjustable dumbbell unless you knew how to disassemble and replace the broken parts. 

Last but not least, the most noticeable problem is more so annoying than it is a true issue, but you need to be very precise upon replacing the dumbbell into the holder otherwise it could get stuck. If you don’t line up the ridges on top of the weight plates and try to adjust it, the dumbbells will get stuck in the holder and you have to go back to the original weight to pull it out. This seems like no big deal but if you’re sweaty and out of breath, you don’t really want to stop and have to line up dumbbells and struggle to get them out if you make a mistake racking them.

As previously stated, this dumbbell works for 90% of people, however, if you need more than 80lbs for a dumbbell exercise, these aren’t a great option since they are not expandable past 80lbs. Also, with the high retail price, this isn’t an option that most people would consider a great deal.

NÜOBELL’s vs. The Competition

Powerblocks vs NUOBELL's
PowerBlock Pro Series Adjustable Dumbbells
(9 ratings & reviews)
From the company that pioneered the selectorized dumbbell, PowerBlock’s new and improved Commercial Series Dumbbells set a new standard for efficiency, versatility, and ease of use. Whether you’re equipping a small home gym or a large pro facility, any training space can benefit from the use of adjustable dumbbells, as just one set of PowerBlocks can serve the equivalent function of dozens of traditional dumbbells, saving you on both costs and storage space. Each PowerBlock has color-coded side rails on the weight plates that correspond to an easy reference weight chart on the handle. The weight plates are nested, which means the handle fits inside weight plate 1, which fits inside weight plate 2, etc. To change the weight in just seconds, slide the selector pin into the blocks at the weight you want. Then reach inside the "core" and grab the handle. When you lift the handle, the weight you selected is lifted along with the handle. Rogue offers all five PowerBlock Commercial Dumbbell Sets: the Pro 32, Pro 50, Pro 90, Pro 125, and Pro 175. All versions include an updated, sleek design, ergonomic handles (TPR grip for the 32, 125 and 175; knurled steel for the 50 and 90), and Black Urethane Coated Weight Plates for smooth, quiet performance. Compatible stands comes standard with all sizes except the Pro 32.

NÜOBELL Dumbbells vs. Powerblock Dumbbells

The NUOBELL Adjustable Dumbbells vs Powerblock Dumbbells is an age-old story of challenger vs. champ. The Powerblock Dumbbells have been around since the early 1990s and have stood the test of time. I have an ancient pair that has stood the test of pretty much every movement and is still fully functional. You cannot go wrong with any kind of Powerblock. 

Another important difference–Powerblock dumbbells can be expanded up to 175lbs, 2.5x heavier than the NUOBELLs. This weight disparity allows Powerblocks to serve everyone while the NUOBELLs will cater specifically towards the above-average joe.

The NUOBELLs triumph in some areas. They have a much quicker selection method, not to say that the Powerblocks are slow to change, but the NUOBELLs are especially quick to adjust. You turn, and boom, new weight. The Powerblocks however have a plastic/metal (depending on model) pin system that can get out of place or stuck, making adjustments not as quick.

Last but not least, Powerblocks come are significantly cheaper than the NUOBELLs; you can get 0-90 Powerblocks for around $550 whereas 0-80 NUOBELLs will run you $750. I think that the lower price point, more weight expansions available, and a better long term build makes the Powerblocks the favorite over the new NUOBELL Adjustables. It will be interesting to see if SMRTFT makes any new expansion kits going forward. 

We’ve reviewed and tested Powerblocks in-depth, and without a doubt, they’re still the king in this arena, in my opinion.

Ironmasters vs. NUOBELL's
Ironmaster Quick-Lok Adjustable Dumbbells
(12 ratings & reviews)
Ironmaster Quick-Lock Dumbell system is the latest generation of our adjustable dumbbells. You can quickly adjust each dumbbell from 5-75 lbs with our patented quick lock design in under 15 seconds! The set includes the Stand at no extra charge. Now you can have a complete set of free weight dumbbells at home that feel just like traditional dumbbells with no restrictions, rattling or safety concerns!  Set includes two handles with four locking screws, 24 ea. 5 lb plates and 4 ea. 2.5 lb plates and dumbbell stand. Handles weigh 5 lbs empty and each locking screw weighs 2.5 lbs so the starting weight is 10 lbs each dumbbell before plates are added. 65 lbs of plates can be put loaded on each handle. Add-on kit available to go up to 120 lbs each dumbbell. Dimensions are just 6.5" x 6.5" x 14.5" at the 75lb size. Heavy Duty - go ahead and drop them. No plastic or fragile parts!Quick-Lock design adjusts from 5-75 lbs in 2 1/2 lb increments in just seconds!Super heavy duty construction with welded steel, chrome plated handles.System includes two adjustable dumbbells at 75 lbs each (150 lbs total) and Dumbbell Stand.Super space efficient design. Takes up less than 2 square feet.Limited lifetime warranty.

The NUOBELLs are very similar in build to another long-standing adjustable dumbbell, the Ironmaster Adjustable Dumbbells. Both utilizing a traditional shape with iron pancake plates, both of these dumbbells have an authentic dumbbell feel.

However, with a time-tested screw system for adjustments, I just feel like the Ironmasters will be much more solid in the long run. With no plastic and no mechanical adjusting systems, there seems to be no weak points and I have never had an issue with them. I have yet to have an issue with my NUOBELLs but I feel like after a year or two they may no longer function as well. 

The Ironmasters like the Powerblocks, readily go above a hundred pounds with a cheap expansion kit. This makes them more appealing for all because once again, not everyone will be fine using 0-80lb dumbbells for all exercises. Also, like the Powerblocks, you get more weight per dollar as the IronMasters are only $699 and come with a high-quality stand that makes them easier to access. A similar stand from SMRTFT would be an additional $200 on top of the $750 for dumbbells.

Once again, the NUOBELLs are superior in ease of adjustability. The IronMasters are not easy to adjust since you have to unscrew them and then stack however many plates you want to use. Compared to the NUOBELLs quick turn and lock, this takes ages. 

Overall, I would have to favor the Ironmasters as they are highly durable and more affordable than the NUOBELLs. Their expansion kits also make them more functional for a wider group of people. 

Bowflex SelectTech's vs. NUOBELL's
Bowflex SelectTech 552 Adjustable Dumbbells
(9 ratings & reviews)
These adjustable dumbbells replace 15 sets of weights. Weights adjust from 5 to 52.5 lbs in 2.5 lb increments up to the first 25 lbs. Easy-to-use selection dials for adjusting weights. They are sold as a pair. Easily switch from one exercise to next and with the turn of a dial you can change your resistance, enabling you to gradually increase your strength. Versatile workout for your legs, back, chest, abs, shoulders and arms. Compatible with the free Bowflex SelectTech® training App for iOS and Android.No more picking up 30 different dumbbells to give you the results you want!Say goodbye to 15 sets of dumbbells cluttering your workout space.With weight that adjusts from 5 to 52.5 lbs., you'll continue to see results as your fitness level improves.Durable molding around metal plates provides for a smooth lift-off and quieter workouts...no clanging metal plates!With the wider weight range you can do heavy exercises such as shrugs and lunges as well as lighter exercises such as curls and raises.

The Bowflex Adjustable Dumbbells have been the most affordable dumbbells on the market for a long time. With two options, the 552 and 1090, these Bowflex Dumbbells are used and loved by many. However, the biggest problems we see on the NUOBELLs are also the same issues with the Bowflex variant. 

The Bowflex Dumbbells have a long history of cracking at weak points if slammed or adjusted incorrectly. But for around $350 for the 552 and around $700 for the 1090s, the Bowflexes are the cheapest options on the market. For a bit more, I feel like the NUOBELLs are a more luxurious version of the Bowflex dumbbells. With a cylindrical knurled handle as opposed to the shaped rubber grip on the Bowflex, I believe the NUOBELLs feel way more traditional than the Bowflex option.

With a smoother mechanism and less bulbous look, the NUOBELLs are a classier adjustable setup than you could keep all over your house without drawing too much attention. 

I would recommend the NUOBELLs over the Bowflex 1090 model as they are similar in price and the NUOBELLs give you a much smoother and more aesthetically pleasing setup. However, if you are not really in need of heavier weights, I would say the Bowflex 552 are your best bet as the 50lb variant from NUOBELL costs quite a bit more than the 552’s from Bowflex, which at the same weight, give you way more weight for your buck.

Full Rating

NÜOBELL Adjustable Dumbbells

Construction - 4.0
Adjustment Speed - 4.8
Max Weight - 4.3
Handle - 4.5
Aesthetics - 4.5
Value - 4.0
4.4
Great

The NÜOBELL Adjustable Dumbbells are the quickest adjusting dumbbells we've ever tested or reviewed (and we've used a lot of them.) There are many adjustable dumbbells on the market with more being created every day, but there's no doubt that these stand out among most. Despite the ease of adjustment and relatively high weight increments (80 LB) we don't feel like these are better than Powerblocks or Ironmasters for most people.

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