Quick-Lock Adjustable Dumbbell System 45 lb Set

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The Ironmaster Quick-Lock Dumbbell System is the latest generation of our adjustable dumbbells – now available in a smaller size set. You can quickly adjust each dumbbell from 5-45 lbs with our patented quick lock design in under 15 seconds!

Now you can have a complete set of free weight dumbbells for training at home that feel just like traditional dumbbells with no restrictions, rattling or safety concerns!

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  • Reviews (17)
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  • Quick-Lock handle design lets you add or remove plates with just a partial turn of the locking screws! US Patent 7,182,716
    Adjust from 5-45 lbs each in 2.5 lb increments in just seconds. (45 lbs each dumbbell = 90 lbs total)
  • Change weights on any flat surface.  The Dumbbell Stand is not included but is available separately.
  • Set includes two handles with four locking screws, 12 ea. 5 lb plates and 4 ea. 2.5 lb plates.  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. 35 lbs of plates can be loaded on each handle.
  • Dumbbells lock up tight with no rattling or looseness. They feel just like traditional fixed weight dumbbells and are not restrictive in the ways you can grip them.
  • Chrome plated steel handles with diamond knurled grips.
  • Heavy Duty – go ahead and drop them. No plastic or fragile parts!
  • Lifetime warranty!
  • Add-on kits available to expand the set to 75 lbs each or go all the way up to 120 lbs each dumbbell.
  • Dumbbell dimensions are just 6.7″ square x 11.5″ long at the 45lb size and just 9″ long at 20lbs size. Handle grip diameter is 1.25″ and there is 6.5″ grip width inside.
  • The weight plates are marked in both LBS and KGS.

We’ve had a lot of questions about upgrading to heavier weights in the future so we now offer an upgrade weight kit. The dumbbell handles and locking screws are the same parts as the 75 lb set so you can add more weight to the 45 lb set if you need it. Add up to 30 lbs per dumbbell with the standard included handles and locking screws. You can find the upgrade kit here: 75 lb Upgrade Kit

You can also get the 120 lb add on kit to use with this 45 lb set. The 120 lb add on kit comes with 4 of the 22.5 lb plates and 4 longer locking screws. If you put on the 22.5 lb plates on the handles, it will be 55 lbs total dumbbell weight.  Then you can add the smaller plates to get up to 90 lbs total.  Of course, if you add some 5 lb plates to get up to 75 lbs first then the 120 lb add on kit will take you all the way up to 120 lbs total.

17 reviews for Quick-Lock Adjustable Dumbbell System 45 lb Set

  1. 5 out of 5


    An incredible product. Extremely well-made, weight feels even in your hand and handle has good knurl. Feels like a normal dumbbell with VERY minimal shifting of plates during reps.

    Weight changes are a little bit slower than some of the other players in this space (Bowflex, Powerblocka), but I think it is worth it for the quality of construction. Also a huge bonus that you can easily buy additional weight of you ever want to.

    Lastly, these dumbbells pair perfectly with the kettlebell handles and other bars (straight bar/EZ bar) to create a great starting point for a home gym.

    A really well-made and adaptable product. Huge fan.

  2. 5 out of 5



    These adjustable dumbbells have been recommended to me so many times that I decided it was time to get a pair. This is easily one of the best home gym products I’ve ever purchased. These dumbbells are so sturdy and incredibly well-made, and take up a fraction of the space a traditional rack would take up. The swapping between weights takes a bit of getting used to but once you get it down it’s quite quick. For the price, these are a great deal. You can tell they’re basically going to last forever (with some basic wear and tear).

    Both myself and my husband are very pleased, and both of us use them. Bravo!

  3. 5 out of 5

    Nathan G

    I got my set a couple days ago and had my first chance to use them last night. They are awesome! One of the best purchases I’ve ever made. Thanks!

  4. 4 out of 5


    Best Adjustable Free Weight Dumbbells.
    I live in a small apartment so space is important. I already had to give up my bench press so I wanted to make sure I at least had solid adjustable free weights. At first, like many, I looked at Bowflex. Every time I went to a store to check them out, they were broken and a mess. I read online how they were made of cheap plastic and how awkward they were to do certain types of exercises because they aren’t shapped like regular dumbbells. I then looked into Powerblock and I was almost sold but then realized Powerblocks were also oddly shaped and hindered some forms of exercise due to the shape. I finally stumbled upon Ironmaster through some random fitness forums. They were made of high quality steel and look and act like regular dumbbells. I ended up buying these despite the higher price tag because I knew it was an investment in my workout. I’ve been using these for several months now.

    High quality steel
    Feels safe to use
    Easy to take weights on and off
    Act as regular dumbbells so no compromises

    Every so often, spinning on a weight plate seems difficult as if the threading isn’t catching it right…not sure why
    I don’t mind it, but it does take several seconds to spin on and off weights

    I would give this product a perfect score if it weren’t for the occasional issue of spinning on the weight plate and it not locking (just keeps spinning). It doesn’t happen often but even when the plates are all facing the same way and everything looks fine, some plates just don’t seem to lock right. I’ve resolved this issue by just switching it out with another plate which is suppose to be the same thing…but then it works. – From Amazon

  5. 5 out of 5


    Excellent Space Saver.
    These are great. They save you a bunch of space but also feel like real weights, not some gimmicky contraption. Would highly recommend. – From Amazon

  6. 5 out of 5


    Excellent product – From Amazon

  7. 5 out of 5

    Stephen Price

    Solid quality, and convenient space aver for the office.
    I keep one of these in the office and one at home. At office it works well as a substitute to coffee and sugar. If I get drowsy from being a desk jockey, I just push a few reps. Excellent solid quality. IMO: It costs a pretty penny, but I believe in only having to buy something once, and this fits the bill. Very quick changing of weights. Many of my office mates stop by my office to use it. – From Amazon

  8. 5 out of 5

    Amazon Customer

    Best on the market hands down
    This s***t is A-1. The best on the market hands down. – From Amazon

  9. 5 out of 5


    This weight set is sublime!!
    The lose weights tighten securely, and the grips are smooth. No more weights falling while you’re trying to get buff! They are well worth the extra money you’d spend on the cheapo sets 🙂 – From Amazon

  10. 5 out of 5

    Robert D.

    Great dumbbells.
    I previously have owned the Bowflex adjustable. I liked them to a point but they really started to give me a headache. Longer, more awkward – harder to use. My sister has them now. These are fantastic, they actually look and feel like Dumbbells and they’re easy to add and take off the weights. If you’re looking to get big muscles they might not be for you but for the rest of us, perfect. – From Amazon

  11. 5 out of 5

    Stephan Sotomayor (verified owner)

    the best
    if you want high quality without spending thousands of dollars on individual dumbells
    these feel just like the ones in the gym.
    and if you add on the fat handle then it really feels like your using weights you find at the gym. the packaging was awsome.
    the dumbells are very sturdy no plastic parts. these will be the dumbells i will stick with forever. and ive had other adjustable dumbells before. you will not regret it

  12. 5 out of 5

    Veracious Fields

    Even though I couldn’t try out the Ironmasters before purchasing them I am glad I went with them.
    I did my research (youtube reviews) and also tried out the Powerblocks and Bowflex adjustable dumbbells at a local sports store. Even though I couldn’t try out the Ironmasters before purchasing them I am glad I went with them. I agree these are not quick enough to do drop sets with. I haven’t had much practice with them(couple weeks) and it takes me about 25-30 seconds to change both dumbbells to a different weight, but that is fast enough for me between exercises since I am OK with a 30 second rest period. I have had the traditional screw on type adjustable before and they always came loose very quickly. I have not had these come loose on me once, same as many other people have stated. If they did begin to rattle they won’t fall apart unless the threads line up with the slot(think of a skeleton key). I can tell these will last forever, which I doubted with the Powerblocks and Bowflex dumbbells which had a cheap feel to them. Buy these if you care more about quality and less about speed. If you want speed I would recommend buying a set of multiple dumbbells, although pricier. Those would be worth your money versus going with Powerblocks or Bowflex dumbbells. – From Amazon

  13. 5 out of 5

    Kenny G

    These dumbbells work great.
    Not as fast or easy to change weight as others, but they feel just like a standard fixed weight dumbbell. Glad I bought these over the other choices. – From Amazon

  14. 5 out of 5

    Umberto R

    These seem like a great place to start.
    Okay I haven’t tried any other adjustable weights except trusty old spin locks so I cannot compare the time it takes to change the weight. However I will say that I am already able to change these things really quickly and with time this should only improve. The 2.5 increment is also a superb feature and it is so nice to be able to add or subtract the weight with what is effectively a turn of a knob. Everything about the weights is well made and designed and they feel really comfortable. I have been eying up ironmaster weights for some time but the $600+ price tag of the 75 lbs dumbbells was a hard pill to swallow. These weights can also be expanded up to 75 lbs and beyond so for me this was the perfect way into getting a really great set up. – From Amazon

  15. 5 out of 5


    They’re priceless to me.
    This truly exceeded my expectations and well worth the expense to me. The quality is outstanding and time for plate changes just a brief pause in whatever you’re doing with them. I can’t imagine anyone with a drive to exercise having an issue with a quarter turn and quick switch to have something durable of quality that can’t fail or wear out over time ?

    As a followup to the above… I’ve recently added Ironmaster’s 1.5″ fat grip adapters to the set and I love them. I also added Ironmaster’s quick-lock Kettlebell and loving it too : ) – From Amazon

  16. 5 out of 5

    SV Mc Nair

    Still the best of the lot.
    As I am rehabbing from shoulder surgery, I decided to purchase the 45 lb Ironmaster set. I have had the heavier set in the past but am always looking to try new things, so they were sold a couple years ago. I regret doing that as my workouts have evolved such that 90% of my workouts involve dumbbells or body weight work. So, I knew I needed something that would last a very long time and I really dislike any sloppy feeling with dumbbells (ie I want it to feel like one solid piece). Having been through every type of adjustable dumbbell over the past 15 years, I knew the ironmasters were the only adjustable that would fit my criteria. There is no difference with this set versus the 75 ib set except the stand is not included, there is (obviously) less weight, and they are cheaper. For those that don’t need more than 45 lbs, these fit the bill. For those like myself that will be wanting more weight, these can be expanded to 75 lbs, 120 lbs, or even beyond that.

    The only other dumbbell I would ever consider are the Powerblocks, but having owned a few pairs of them, I knew the one thing that always turned me off was the ever shifting of the plates when doing certain lifts. For some this is a non issue. Those looking for an adjustable dumbbell that can essentially be made into a solid dumbbell of any weight will find the answer with the Ironmasters. – From Amazon

  17. 5 out of 5


    Best Adjustable I’ve Found
    I’m a personal trainer, and after a lot of research, I went with Ironmaster as the dumbbells I bring to people’s homes. I really love these. I’ve had experience with some of the other big names, but these are definitely higher quality. Mine take a bit of abuse with all the transportation, and don’t have any wear to show for it. After all, it’s all solid metal–no plastic or anything flimsy to break. The only thing is some minor chipping to the paint on the weight plates, but it’s only cosmetic and I could always spray paint it if I cared (I don’t).

    One thing that I’ve noticed–and all my clients have commented on–is how comfortable the grip is. I think it might be the most comfortable I’ve used. Some dumbbells have too narrow a grip and it puts a lot of excess pressure on your hand. The texture is great too, there’s enough for grip but not so much that it chews up your hand. The locking mechanism is SOLID. No way those plates are falling off once you lock them in. It’s basically identical to a regular dumbbell once the locking screws are in–no rattle or anything.

    Solid, nothing to break
    Will last forever
    Very comfortable
    Secure locking mechanism (best I’ve used)
    Easy to change weights
    2.5lb changes

    Takes a little practice before you can change them fast
    Paint on weight plates chips a bit (minor)

    Overall, these get my top recommendation. I use them on an almost daily basis and I’ve been very satisfied. Nothing but positive feedback from my clients too. Definitely better than the other adjustables I’ve used. – From Amazon

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