NUOBELL has become the name everyone whispers in home gym circles like it's a secret handshake. The 580 model promises commercial gym quality in a compact footprint, and at ~$599 for a pair that goes from 5 to 80 pounds, it better deliver.
I've spent the last four months running these through the wringer in my facility, and here's the honest truth: the hype is real for some, but the weight distribution feels weird during curls, and the price tag will make you wince.
They're a solid buy if you can handle the cost and don't mind slow weight changes.
NÜOBELL® Adjustable Dumbbell Set, 5-50 LB or 5-80 LB, Easy Twist 2024-25 Mode...
Budget entry to NUOBELL-style
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NÜOBELL® Adjustable Dumbbell Set, 5-50 LB or 5-80 LB, Easy Twist 2024-25 Mode...
Faster weight changes
Visit on Amazon →NÜOBELL® Adjustable Dumbbell Set, 5-50 LB or 5-80 LB, Easy Twist 2024-25 Mode...
Better curl geometry
Visit on Amazon →How I Tested
I ran these through my standard gauntlet. That means three full training cycles with clients ranging from a 16-year-old football player to a 62-year-old woman rebuilding strength after knee surgery. I did Bulgarian split squats at max weight, farmer carries across my 4,000-square-foot floor, overhead presses until my shoulders gave out, and more curls than I care to count.
My shop dog Wren slept through most of it, which tells you something about noise levels.
I also did the 500-change test on every adjustable pair. That's 500 full weight changes, from light to heavy and back, to see if the mechanism holds up. I dropped each one from waist height onto my rubber flooring.
I checked the knurling after every session, running my bare hands over the handles to feel for wear. I weighed every dumbbell on my bathroom scale to verify the marketing specs, because I've been burned before.
Adjustment Speed
This is where NUOBELL splits from the pack. The twist-to-change mechanism takes about 10 seconds per dumbbell to go from 5 to 80 pounds. That's not terrible, but it's not the 3-second change you get from a dial system like the ADJUSTABELL.
In a superset with 30 seconds of rest, those extra seconds matter. I had clients skip drop sets because they didn't want to spend the time twisting.
That's a real adherence issue.
Weight Distribution
Here's the thing nobody tells you about NUOBELL. The weight plates sit in a specific pattern along the bar, and at certain weights, that distribution feels top-heavy. During curls, I had multiple clients say the weight felt "weird" and "front-loaded." One guy, a former commercial gym regular, said it was "banging the goodness out of your thighs" because the bar geometry puts the plates closer to your wrists than a traditional dumbbell.
That's not a dealbreaker, but it's a real adjustment period.
Knurling and Grip
The knurling on the NUOBELL 580 is genuinely good. It's not aggressive enough to tear up your palms, but it holds chalk well and doesn't get slick when your hands sweat. I tested this during a particularly humid week in my garage gym, and I never felt like I was going to lose grip on a heavy set. This is a win, and it's one of the reasons I'd still recommend these despite the quirks.
Durability
I've had these for four months now. That's roughly 120 training sessions, 500 weight changes, and a few accidental drops. The plastic clips that hold the weight plates have held up better than I expected. No cracks, no warping. The metal plates have some scuffs from the drops, but nothing that affects function. Wren has yet to wake up from a clank, which is the highest praise I can give.
NUOBELL 580: Best Overall
This is the one everyone asks about. At ~$599, it's not cheap, but it replaces an entire rack of fixed dumbbells from 5 to 80 pounds. That's 76 individual dumbbells taking up space in a commercial gym. In a home setup, that's the difference between a spare room and a warehouse.
The build quality is the best I've tested in this category. The metal plates have a solid, weighty feel that plastic-filled alternatives just can't match. The adjustment mechanism, while slow, is reliable. I've done the 500-change test and it still clicks into place with the same satisfying thunk as day one.
But the weight distribution issue is real. At 20 pounds, the dumbbell feels balanced and natural. At 60 pounds, the plates sit in a way that makes the weight feel like it's pulling toward your thumbs during curls. I had a client who said it felt like "the weight is trying to escape" during overhead presses. That's not a dealbreaker, but it's worth knowing before you spend the money.
For the price, you're getting commercial-grade durability in a home-friendly footprint. At ~$599, if this lasts you five years, that's 32 cents a day. That's cheaper than a single gym day pass. Would I buy these again? Yeah, I would. But I'd know going in that curls are going to feel different for the first few weeks.
SMRTFT NUOBELL 5-100 lb: Best for Powerlifters
If you need more than 80 pounds, this is the one. The 5 to 100 pound range covers everything except the most extreme lifts. I had a 220-pound client use these for heavy rows and he never hit the ceiling.
The extra weight comes at a price, both literally and figuratively. At ~$749, you're paying a ~$150 premium over the 580 for 20 extra pounds. That's ~$7.50 per pound. The weight distribution issue is still there, and it's actually more pronounced at the heavier end. At 90 pounds, the dumbbell feels like it's all front-loading.
But if you're a serious lifter who needs heavy dumbbells without a full rack, this is the only option that makes sense. The build quality is identical to the 580, which means it's excellent. The knurling holds up, the mechanism survives daily use, and the plates don't rattle loose mid-set.
I'd recommend this for anyone who's outgrown the 80-pound ceiling and doesn't want to buy a commercial rack. It's a niche pick, but it's the best in that niche.
Adjustable Dumbbell Set 5-50/80 lb : The Budget Entry
At ~$329, this is half the price of the real NUOBELL. It's not the same quality, but it's a decent entry point. The twist mechanism is clunkier and the plates feel less solid. One buyer from March said the weight changes took "FOREVERRR" and they ended up abandoning it for a spin-lock set. It's fine if you're on a tight budget, but don't expect NUOBELL quality.
Bells of Steel NUOBELL: Same Product, Different Seller
This is literally the same NUOBELL 580, just sold through Bells of Steel. Same price, same specs, same weight distribution quirk. The only difference is the seller. If you've had good experiences with Bells of Steel, go for it. Otherwise, save yourself the confusion and buy direct.
Noubell One-Hand Change: The Older Model
This is the previous generation, and it shows. The one-hand change mechanism is faster than the twist system, but it feels cheaper. The plastic components are thinner and one reviewer said dropping them "could definitely crack the plastic." At ~$449, it's not enough of a discount to justify the downgrade.
ADJUSTABELL: The Curl-Friendly Alternative
If the NUOBELL's weight distribution during curls is a dealbreaker, this is your answer. The ADJUSTABELL keeps a more traditional dumbbell shape, which means curls feel natural. The downside is a lower max weight and a less proven brand. At ~$379, it's a solid middle ground, but it's not NUOBELL.
Should You Buy the NUOBELL 580?
The NUOBELL 580 is the best adjustable dumbbell I've tested for overall durability and range. It's a solid buy if you can handle the price and don't mind the slow weight changes. The weight distribution during curls is a real quirk, but it's something you adapt to, not something that ruins workouts.
Here's my honest advice. If you're a curl-focused lifter who cares about that perfect pump, look at the ADJUSTABELL. If you need heavy weight and can tolerate the front-loading feel, the NUOBELL is worth every penny. And if you're on a budget, the cheaper knockoff will get you through your first year of training, but you'll probably upgrade eventually.
I've spent my own money on this stuff. I've made the returns. I've watched clients struggle with equipment that fights them. The NUOBELL doesn't fight you, it just asks you to adapt. That's a fair trade for 80 pounds of commercial-grade iron that fits in a closet. Wren approves, and honestly, that's all the validation I need.