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Ironmaster Quick Lock Dumbbell System Review

IronMaster Quick Lock Dumbbell System

About.com Rating 5 Star Rating
User Rating 5 Star Rating (1 Review)


Ironmaster Dumbbell
Ironmaster Dumbbell
The problem of traditional dumbbells is the need to have multiple pairs if you want to minimize time when changing weight, which takes up space. Adjustable dumbbells solve this problem somewhat but then they introduce the issue of wasted time brought about when one changes resistance. However, I recently became introduced to a dumbbell system that solves the space issue and minimizes the problem of wasted time. This system is called the IRONMASTER Quick-Lock Dumbbell System.


The system was developed by a IRONMASTER, a Seattle based company that was originally founded in 1978. They primarily sell their original designs and hold many patents on their unique equipment. Over 30% of their customers come from referrals and repeat customers due to the outstanding quality of the products and excellent customer service.

The first time I visited the website http://www.ironmaster.com, I wondered how the system worked since on the outside it just looked like your typical traditional dumbbells. The lifetime warranty advertised on the website caught my eye as well, so I also started wondering how sturdy and secure it was in comparison to other adjustable systems. Finally, what caught my eye the most was the advertised price: $429 for a pair that went up from 5-75lbs and that included the dumbbell rack for free! After seeing all of these things I knew that I needed to know more about this system; especially since so many of my book customers were beginning to inquire on it.

Component Descriptions

Ironmaster Dumbbell HandlesIronmaster Dumbbell Handles
Soon enough I got my system and the first thing that I took out was the handles. The handles on their own weight 5 lbs and they are made of solid steel with really good welding at the ends. They are chrome plated with the knurled steel for better grip; no different than traditional dumbbells. The outsides are squared in design with a notch on one of the sides of the square.

The way the weights are secured is through a most ingenious locking screw mechanism. The 2-1/2 lb screws, also made of solid steel, consist of a 4-inch diameter disc with a knurled grip, and a 1-inch diameter partially threaded shaft. The disc has engravings with an “OPEN” arrow label and “LOCK” arrow indicating the direction in which it needs to be twisted in order to secure the weights.

Weight Plates

After I thoroughly examined the handles and screws, I started taking out the weight plates. The weight plates are made out of rugged precision-machined iron, capable of withstanding some abuse such as the throwing of weights on the floor. They are designed so that they can be stacked and interlocked into each other and into the handle backing plate; sort of like a LEGO piece. The plates have tapered edges that allow them to tilt in toward the handle automatically and stay in position during the weight change when the locking screws are out. The set brings twenty-four 5-lb plates (12 for each dumbbell) and four 2.5-lb plates (2 for each dumbbell) in order to facilitate 2.5-lb increments. Since we have a dumbbell handle that weighs 5lbs, two screws that weigh 2.5-lbs each, and twelve 5-lb plates with two more 2.5-lb plates, the system can provide up to 75lbs of resistance per hand.

Weight Change Operation

Ironmaster ScrewsIronmaster Screws
So now that I had inspected all of the components of the dumbbells, I was eager to try out the weight change operation.

To change the dumbbells, one has to set the dumbbell handles on the rack (or floor is you want to) with the notch on the side of the squares facing up. To open the locking screws you just turn the disc until the “OPEN” arrow points up toward the notch indicator of the handles and pull the screw out. Because the shaft of the screw is partially threaded, when the “OPEN” arrow is aligned with the notch, the screw easily comes out not requiring any further twisting. Then all you have to do is stack the weights that you want to add (or take out the ones that you want to remove) and re-insert the screw by again aligning the “OPEN” arrow with the notch. To secure the weights, just push the screw all the way in until the weight plates stack tightly and then twist them clockwise in order to engage the threads until they are hand tight.
User Reviews

Reviews for this section have been closed.

 5 out of 5
You don't need quicker changing DBs than these., Member lazur

Not the fastest, but considering proper rest between hard sets, (& impaired fine motor skills), they're as fast as anyone needs. (If you can change ""Powerblocks"" fast enough to do multiple stripping sets, you're not working hard enough: Your hands should be too shakey to put the fork in straight. Do rest-pause without changing the weight, instead.) ...Ironmasters are the tightest-locking adjustables, & the shortest heavy adjustables, by far. (They get a bit long w/ 120Lb kit, but @ 75 lbs, they're -short-.) The plates are perfectly proportioned,& the locking pins' wide, flat head extends only a fraction of an inch past the plates.There's no bar. Less weights=less length.... Adds up to a DB you can swing & twist,(even throw, if that's your thing), without fear. Unless you have room for a dozen sets of gym-quality solids, there is nothing better.

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