Opti Cast Iron Dumbbell Set - 20kg
704/0764£60.00
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About this product
Strengthen and tone your body with this 18-piece Opti Cast Dumbbell Set. With cast iron plates and a spinlock system, customise your workout from 0 to 20kg in an instant. Including rubber grips for stability, it's ideal for both beginners and experts. It's a full-on, full work out, at-home, gym.
The dumbbells are perfect to perform a range of exercises including hammer and bicep curls and tricep extensions to work on your upper arms and lateral, side and rear raises with shoulder presses to build stronger shoulders. Target your legs by adding weight to lunges or squats to increase your strength and enhance your balance.
Made of cast iron these weights are built to last and the rubber grips will make it comfortable for you to use for longer. Bar material: Steel.
About the product:
- Circular shape weights.
- Spinlock.
- Adjustable weights - can add and remove weights as desired.
- 18 pieces in this weight set.
Composition/Material:
- Latex free.
- Plate material: cast iron.
Weight:
- Bar weight 3.4kg.
- Maximum weight on a single dumbbell: 20kg.
- Total package weight 20kg.
Dimensions:
- Dumbbell handgrip length: 12.5cm.
- Size H16.3, W35, D16.3cm.
- Boxed size H36, W20, D9.5cm.
4.7
47 reviews
100%
Recommended this product
Customers Say
Users appreciate the quality, adjustability, and compact design of these dumbbells, making them ideal for home workouts. However, some mention issues with grip comfort and packaging damage.
An AI generated summary based on recent customer reviews
Each review is verified as authentic by our independent third party and we only publish reviews from customers or Argos Testers who have purchased or used the item. Customers are incentivised to submit product reviews as part of a prize draw.
Sturdily made and simple to use
I am in my 70s and bought these dumbbells to prepare myself for lifting a 12.5 kg, 9 months old grandson. Exercising with them for a month put me in good shape for the task!
Grandpa Ian, 65 or over
Great beginner set
Bought these to replace a set weight pair and I really love these. I can adjust as necessary for my comfort and they're easy to alter. They are great quality and the grip bar is very comfortable.
latchkeykid, 65 or over, Accrington, UK
Pair of Cast Iron Dumbells 20KG Back
Well made and optically looks good. The locking mechanism works well and does not loosen. Compact design and stores away neatly.
Team ARMY 66, 45 - 54, Oswestry
Exactly what I needed
Glad I bought this, has been exactly what I needed, right level of weight adjustment and easy to use. No faff.
Tally, 35 - 44, Essex
great
Just what I ordered perfect for what I needed cheers guys
andrew, 55 - 64, bishop auckland
Perfect
Just what I was looking for. The dumbbells are not too bulky,easy to add and remove weights and easy to handle
Galo, 45 - 54, London
Great for a quick work out
I bought these weights to use along with my multi gym and they are just right for a warm up and down .they don’t take up much space which is handy
Wezbo, 35 - 44, Blackburn, Lancashire
Excellent quality
Excellent quality and lots of different weight options
Dee, 45 - 54, Midlands
Amazing Cast Iron Dumbell’s
Love theese cast iron weights!! I have added two extra Bars !!
philimages, 65 or over, Swansea
Great!
As a beginner I’m finding the weights a great starting point. Really easy to use. You just have to make sure you keep the screws tightened. I maybe should get some gloves because the metal bar is making my hands a bit dry
WMason, 35 - 44, Bolton
Hi, Ian W
I can advise that the bars on the Opti Cast Iron Dumbbell Set - 20kg weigh 1.7kg each.
Thanks for using Q&A.
Hello Amanda,
I can advise the following for the Opti Cast Iron Dumbbell Set - 20kg:
This is one inch.
Thanks for using Q & A.
The bars also weigh 1.7kg each, totalling the 3.4kg mentioned in the advert.
Hello Lou Lou,
I can advise the following for the Opti Cast Iron Dumbbell Set - 20kg:
They are designed to be used with the bar, but could be used individually if you are safe with them. They are 0.5, 1.25,2.5kgs and you get 4 of each.
Thanks for using Q & A.
Ive been using this set for a couple of years now. Its possible to fit most but not all of the provided weights onto one bar. If you leave off two of the 0.5 kg weights, you have a 17.5 kg dumbbell, but there is no safety margin if the locks work loose, which can happen. Its best to leave off all four 0.5 kg weights giving you a 16.5 kg max with one dumbbell. After using these for several months, I opted to get the add-on set of four 5kg weights so I could make two 20kg dumbells.
Hello There,
The Opti Cast Iron Dumbbell Set - 20kg has a maximum weight on a single dumbbell of 20 kilograms.
Thank you for using Q&A
Hello Kate,
I can confirm that this Opti Cast Iron Dumbbell Set - 20kg comes boxed in standard packaging and not a case.
Thank you for using Q&A
The 2 bars in total are 3.4kg, so 1 bar is 1.7kg. This makes the total weight for everything 20.4 kg.
Hello Zero gravity,
I can advise the following for the Opti Cast Iron Dumbbell Set - 20kg:
Box weight is around 24Kgs.
Thanks for using Q&A.
Hello Benjamin,
The supplier has advised the following for the Opti Cast Iron Dumbbell Set - 20kg:
“ The bars are 35cm long and the threaded section is 10cm either side. ”
Thanks for using Q&A.
Hello Spangletree,
The supplier has advised the following for the individual weights and the numbers of them in the Opti Cast Iron Dumbbell Set - 20kg:
0.5kg x 4
1.25kg x 4
2.5kg x 4
Thank you for using Q&A.
ABOUT THE ITEM - Opti Cast Iron Dumbbell Set - 20kg 7040764. The item has rubber grips on the METAL spin locks which come loose during use, and fall out. In short the spin lock has rubber grips which stop the spin locks coming loose but are NOT GLUED IN and come loose during use. I super glued mine in, so I am not concerned about myself. But this is a worrying defect for Argos. The manufacturer could remedy this easily.
_ NO, this has a METAL spin lock! I have now checked this by scraping the paint, and using a powerful magnet to check this is metal.
In short, I asked Argos whether this had a METAL spin lock because when I first encountered a similar weightlifting item on Argos I was PUT OFF BY THE PLASTIC LOOKING SPINLOCK. I only went ahead because I was prepared to risk it being plastic, but hoped the spin lock was METAL.
ARGOS you should now correct this statement by stating the spin locks are METAL.
Hello Lucky,
I can advise the following for the Opti Cast Iron Dumbbell Set - 20kg:
This is a plastic spin lock.
Thanks for using Q&A.
Hello Lucky,
The supplier has advised the following for the Opti Cast Iron Dumbbell Set - 20kg:
“ The spin locks are made of iron. ”
Thanks for using Q&A.
The small print
*Prices correct as displayed but are subject to change.
The customer and brand answers you’ll see above are submitted independently. As we don’t review these answers, we can’t take responsibility for anything they may say. The responses from Argos colleagues are accurate at the time of publishing. For the latest info, you should check the product page.