







🔥 Elevate your grind with cast iron power — no roll, all control! 🏋️♀️
The CAP Barbell Black Cast Iron Hex Dumbbell offers a robust 5-120 lb range with ASTM A48 Class 20 grey iron heads and a cold rolled steel handle featuring medium-depth knurling for superior grip. Its hex design prevents rolling, making it perfect for versatile strength training, functional workouts, and HIIT. Finished with a durable industrial enamel coating, this dumbbell combines professional-grade durability with ergonomic comfort, trusted by fitness enthusiasts worldwide.














| ASIN | B0145B4PQY |
| Best Sellers Rank | #173,885 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #549 in Exercise & Fitness Dumbbells |
| Brand | CAP Barbell |
| Brand Name | CAP Barbell |
| Color | Black, Single |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,185) |
| Date First Available | August 11, 2015 |
| Global Trade Identification Number | 00702556103203 |
| Handle Diameter | 1.25 inches |
| Handle Material | Alloy Steel |
| Included Components | dumbbell |
| Item Dimensions LxWxH | 12 x 4.5 x 5.2 inches |
| Item Package Dimensions L x W x H | 13.5 x 11.5 x 10 inches |
| Item Weight | 30 Pounds |
| Manufacturer | Cap Barbell, Inc. |
| Material | Cast Iron |
| Model Name | SDB2-030 |
| Number of Pieces | 1 |
| Package Weight | 14.31 Kilograms |
| Part Number | SDB2-030 |
| Product Dimensions | 12"L x 4.5"W |
| Size | 30 lb single |
| Special Feature | No-Roll Head |
| Sport Type | Exercise & Fitness |
| Style | 30 LB |
| Suggested Users | unisex-adult |
| UPC | 702556103203 |
| Warranty Description | 30 day manufacturer warranty |
F**K
Dumbbells fine, packaging not the best
So the 50 pound dumbbells I got are good, no loose heads or serious issues. The finish isn’t perfect, they have some chips and what not, but I expected that when having 50 pounders delivered. The knurling is fine, not very sharp but it’s good (I got 40s in the past with some wild burrs that had to be filed so you wouldn’t be cut, this set was much tamer). I didn’t love the packaging. They were in two cardboard boxes (for each dumbbell, they were delivered separately of course), both of which were destroyed, filthy, and wet since it’s been snowing here. One box was entirely open on one side, however given the weight of these I’m not surprised and I honestly feel bad for the delivery driver who had to deliver two 50 pound boxes to my door. So, thanks to that guy. But either way, the packaging really wasn’t good enough for 50 pound dumbbells. They had a plastic bag wrapped around them inside as well, which seemed to be extremely old. The plastic was torn and destroyed, so I’m guessing these have been sitting around for a long time. They were dirty as well, but nothing a little alcohol can’t clean. I held off on ordering dumbbells this heavy online for a while, but went for it here. It turned out fine in my case, they are not damaged in any meaningful way (again the finish isn’t perfect but I don’t care, they’re just dumbbells). Maybe I got lucky but I’m happy with them. One thing I cannot comment on is their exact weight, I don’t have a scale here (I weigh myself at my shop, should probably buy a scale for home).
A**W
good solid product
This product is simple, effective, and exactly what I expected.
J**T
Great dumbbell
These work great, and were a great price for the item! The weights are quite balanced, and great for a beginner like me. I found no dents or chips in the weights, and they aren't slippery in the hands either. The tag they came with was somehow really sticky on one dumbbell, and i was worried it would leave residue, but a quick wipe with a wet paper towel got it all off. My sore arms aren't all that happy after a few weeks of working out, but I am definitely getting some definition and tone in there. Overall, very happy with my purchase, and would recommend for beginners.
A**Y
Good weights
Good weights
S**R
Great dumbbell, but not as good as they used to be
I actually bought this to replace a dumbbell I purchased from Amazon during the pandemic. The one I replaced was not made by CAP, and was pretty poor quality (chipping paint, shoddy casting and assembly, etc.). I also have an older CAP dumbbell, just like the one I'm reviewing here, and the quality is excellent. This new CAP dumbbell looked nearly perfect when I received it but, surprisingly, there were a couple of dents. It's held up well, but I am starting to see some small chips, leading me to think that CAP's quality control, post pandemic, has slipped a little bit. I still think CAP is the standard for this type of dumbbell, and I'd probably buy another one, but it's not quite as nice as the one I bought 5 or 6 years ago.
J**T
Solid feeling Product.
Pleased with these dumbbells, the grip is smooth straight shafts with some paint edge artifacts. Size looked small but fit nicely in to my hand, fingers dont touch my palm. Finish is a bit rough in some spots and one of mine got a small ding at some point in initial shipping, was re boxed by amazon and no additional damage occurred. Great for the price. Paint feels a bit rubbery but its either to soften putting them down or will cure with some more time. Over all good value would buy again. (got them for a little over a 1/lbs)
M**D
Everything was great thank you
Everything was great thank you
A**R
Great buy!
After looking at rubber hex dumbbells and cast iron dumbbells I decided to take a chance and buy these dumbbells. They arrived a little banged up. One pair of weights arrived and were halfway through the box. Some sings and noticeable scratches, but nothing that would make me want to go through the ordeal to send them back. They really are very heavy. Seem like they will hold up over time. I think they are a great buy for the money. I’ve seen rubber weights at the gym slowly lose their hex shape and wear over time and from use. I don’t think anyone will have a problem with these cast iron dumbbells. I will purchase more in the future.
M**E
What can you write about a dumbell? It feels great to grip and it weighs 20 lbs as advertised.
A**O
Llego antes de lo estipulado (típico en los envíos de Amazon) Buen producto, un poco tosco en su acabado más no me quejo por ello (no es para concurso) cumple cabalmente con la función para la cual fue creada.
M**Y
Shipping was on time. Weights are just like the ones I use at the gym. They are great. They'll last me a life time I am sure. lol
M**Y
Shipping was on time. Weights are as expected...just like the ones I use at the gym. The are perfect.
M**R
Perfect! and the price was right compared to other dumbbells here with the same weight of 25lbs. Update... I noticed they upped the prices considerably in caparison too what they were when I fist bought these dumbbells. I bought these dumbbells from 5lbs all the way to 30lbs, The 40lbs was 60 dollars and now it's at 74 dollars saying you save almost 15 dollars, what kind of bait and switch is this? I was going too buy the 35 and 40lbs but not anymore, so disappointed!
Trustpilot
2 weeks ago
2 months ago