Adjustable Dumbbell (Single) by ROBURFLEX for Workout Strength Training Fitness Home Gym
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Availability:
In Stock.
Arrives
Tuesday, Nov 4
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Color: BLACK - 80LB
Features
- SMART DESIGN: Traditional adjustable dumbbell length remains fixed even with smaller weights. The adjustable dumbbell's length reduces with lower weight selection, providing you a wider range of arm movement. The vibrant colors with matte finish blends anywhere in your home.
- 1-SECOND WEIGHT CHANGE: One hand turn for fast weight adjustment. Enjoy fast adjustment and gain better training efficiency.
- SPECIFICATIONS: The dumbbell plates are made of 95% cast iron, hence are extremely durable.
- THIS PRODUCT IS SOLD AS A SINGLE DUMBBELL. Recommended quantity is to buy in a pair (Quantity = 2).
- WARRANTY & CUSTOMER CARE: Roburflex adjustable dumbbells come with a 2-year warranty which covers all functional damage to the product and replacement of all parts. Please contact roburflex customer support for any warranty claims or concerns (details are in the product manual).
Description
ROBURFLEX Adjustable Dumbbell (Single) for Workout Strength Training Fitness Home Gym
Brand: Roburflex
Color: BLACK - 80LB
Item Weight: 80 Pounds
Material: Cast Iron
Special Feature: Adjustable Weight
Brand: Roburflex
Color: BLACK - 80LB
Item Weight: 80 Pounds
Material: Cast Iron
Special Feature: Adjustable Weight
Product Dimensions: 21"L x 7"W
Style: Adjustable Dumbbell
Number of Pieces: 1
Global Trade Identification Number: 10
Manufacturer: Krato Fitness
Item Package Dimensions L x W x H: 22.5 x 12 x 11 inches
Package Weight: 38.1 Kilograms
Item Dimensions LxWxH: 21 x 7 x 7 inches
Brand Name: Roburflex
Part Number: RF-AD
Date First Available: December 15, 2023
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Nov 4
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: BLACK - 40LB Extendable
For anyone looking to maximize space and versatility without sacrificing quality or performance, the ROBURFLEX Adjustable Dumbbell delivers exceptional value. Its intuitive adjustment, heavy-duty construction, and ergonomic handle ensure it outperforms most competitors in both convenience and user experience, I highly recommend this product
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Reviewed in the United States on August 3, 2025 by mukthar abdul
Color: GREEN - 80LB
The ROBURFLEX adjustable dumbbell is a game-changer for my fitness routine! It’s perfect for strength training at home and eliminates the need for multiple dumbbells, saving both space and money. Adjusting the weight is quick and seamless, allowing me to switch between exercises without breaking my flow. The build quality is outstanding—it feels solid and well-balanced in hand, with no rattling parts. The grip is comfortable and non-slip, even during sweaty workouts, which is a big plus. I’ve used it for everything from bicep curls to shoulder presses, and it performs flawlessly. Whether you’re just starting out or are an experienced lifter, this dumbbell is an amazing addition to any home gym. I highly recommend it for its convenience, durability, and overall design!
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Reviewed in the United States on January 21, 2025 by Alex
Color: GREEN - 40LB Extendable
I just recieved this item today and it's already a 40lb piece of garbage out of the box. I placed the dumbell and cradle on the floor immediately out of the box. My first attempt to pull the dumbbell out of the cradle was successful - it was set to 25 pounds and I pulled out 25 pounds. However. When I tried to return the dumbbell to the cradle, it absolutely would not line up with one side of the remaining weights. I reset all the weights in the cradle by aligning them with the trapezoid shaped guides and then tried again. Once my dumbbell was able to align with thr remaining weight, I tried to size up to 30. However, this time, the weights refuse to leave the cradle and pulling the handle results in ALL the weights and the cradle to go with the dumbell. I have continually attempted to reset the alignment of the weights and the dumbell and continuously the handle gets stuck (can't turn), or weights get stuck, or I can't align the dumbell back in. Furthermore, just to really hughlight whatever the QA process is like for these Dumbells, the indicator on the handle is reversed -> rotating in the + direction decreases the weight and rotating in the - direction increases the weight. There is a lot of promise in these Dumbells, I like the sleek design and the turning mechanism, but if they can't even adjust weights then they're just a waste of money.
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Reviewed in the United States on July 21, 2024 by Stephanie E
These dumbbells are great. Back in 2019-2020, I finally got the motivation to start going to the gym and putting myself into shape. But unfortunately, all the gyms were temporarily closed due to covid. So, I decided to build my own gym at home. Unfortunately, my space is very limited. And these were perfect for my situation. Saves space, adjustable weight, looks cool. As long as you treated them nicely, not dropping it, being sure each plate was aligned before adjusting it, they work wonders. Although after about a year in, one of the handles broke and stopped adjusting. So, I emailed customer service, and quickly I was able to order a replacement handle. Super easy! I received the part, replaced it, and got back to work. Just recently, the other handle stopped working as well. Same thing, emailed customer service, and ordered a replacement part. Even during holidays and weekends they were able to reply quickly. I’ve been nothing but satisfied with this product and this company. If you're debating whether or not to order this, you should do it. Other companies sell one dumbell for at least $800. For the amount it costs, this is more than perfect.
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Reviewed in the United States on January 6, 2024 by Jayven
Color: GREEN - 80LB
Easy to use and are great if you have limited space. Unfortunately, after about a month of use one of the little plastic clips has broken. Not sure how it can be repaired.....so I might come back and change my review.
Reviewed in the United States on May 28, 2025 by Ryan D. Ryan D.
Color: WHITE - 80LB
Awesome dumbell, I purchased 2. Smooth transition between weight and smaller foot print than other adjustable dumbell like the Bowflex. Very happy with this purchase well worth the cost.
Reviewed in the United States on August 4, 2025 by alphonse croce
Peloton of Dumbbells. Can’t emphasize enough on the quality and the looks. Very proud of my research and finding this gem I did a lot of research on adjustable dumbbells and I opted against dumbbells designed like Bowflex/Ativafit as I had concerns their wide length will end up limiting motion in most exercises. So I was left with choice between these, Snode, and Core Fitness. I went with this as the colors in these dumbbells looked good and I am getting more pounds per price than the the other 2. I have used these dumbbells quite a few times and I am quite pleased with the high end quality, built, functionality and the looks. I will list down the Pros and Cons. Pros: really quick weight adjustments, amazing price per pound, weight evenly distributed, and allows wider range of motion then the bowflex/ativafit type dumbbells. Cons: Weight is in kg instead of pounds and the increment is at 4kg (i.e. 8.8 pounds) which might be considerable for a beginner. However, considering the built quality, these are totally worth the investment
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Reviewed in the United States on August 3, 2021 by Wasif Shabbir Wasif Shabbir
I’m a bit late on the review here, but I can at least attest to the longevity of the dumbbells! I bought these almost a year ago and have used them around 2-3 times per week. They’ve held up great and I’m really happy with the way the look. Definitely nice to have something compact for a home gym! Also, one of the dumbbells looks like it had a rough time during shipping (box wasn’t in the best shape) and subsequently, the handle didn’t work. I reached out to the email address provided on the card in the box with pictures of the handle. I was pleasantly surprised to receive a punctual reply asking for a few more details and within a few days, I was given a tracking number for a package with a brand new handle. It came, I swapped it out, and it’s working great. I really appreciate customer service like that and I think it speaks volumes about a company who fixes something that was completely out of their control!
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Reviewed in the United States on June 6, 2023 by Marcus Turner