JayflexHyperbell Dumbbell Converter - Convert Dumbbells to Barbell Set and Kettlebell for Home Fitness - Adjustable & Up to 200 lb Capacity Weight Barbell for Weight Lifting

Great dumbbell bar kit, quick and easy to switch dumbbells and they fit quite securely. Very solid construction, highly recommend! If you have dumbbells and looking to take them to the next level this bar will do it.

I wasn't sure about this, but I'm very happy with the purchase. I've attached dumbbells ranging from 15-45 lbs and everything seems safe and secure.The only little thing to keep in mind is that the hand grip on the dumbbells is longer than the clamp - so if you're doing a curling exercise you need to be mindful of the position of the dumbbells, because as you curl the weight can slide within the grip creating a jerking shift in the weight. But that's a minor issue that you'll quickly figure out how to avoid.

PROS: I got this to use on older Nautilus 552 adjustable dumbbells. The product is a neat concept. I like that the handle can rotate so you can use the handle in both directions. I avoided ordering another popular handle attachment b/c the handle was always parallel with the dumbbell and I wanted it perpendicular with the dumbbell for kettlebell swings, etc like a real kettlebell is. I like that you can attach up to 100lb dumbbell. I recently purchased a single used Bowflex 1090 adjustable dumbbell just for this handle and it fits on it too, however it is even a tighter fit. The Jayflex doesn't slip or slide like I thought it might before I bought it. If your dumbbell handles are skinny, it will slide around.CONS: I would only recommend this product if you're going to leave it on the dumbbell! Don't be expecting to remove this in between sets to put on another dumbbell. It takes a strong grip to press the halves together and get the top screwed on. And it took 2 of us to get it on the new Bowflex 1090 dumbbell. But at least it's tight and won't slip around. Not only is it a tight fit, but getting the handle and screw to line up is a challenge. It's essentially 3 pieces that you're trying to manueuver. I highly recommend putting this handle on an adjustable dumbbell and leaving it on!!! My handle will be staying on the single 1090 so that our pair of 552's are freed up from always having to remove the handle when someone else wants to use the weights.Overall, it's a neat concept, but it can be difficult and time consuming to swap out for another weight. I only recommend buying this if you will leave it on a dumbbell or don't might the frustration of swapping it out.

This has saved me so much money on kettlebells. It’s a little time consuming to switch out the weights, so not great if you need several different weights and need to make a quick change during a workout, but being able to use the weights I already have has saved so much. It also saves space by not having a bunch of different kettlebells to store.

This is perfect for home use. I have dumbbells that go from 5 - 100 lbs and this holds them all. I was worried the 100 lbs would be too much. But, the unit held the 100 lbs and there were no issues on my end. These will be great for deadlifts and farmer's carry exercises in the yard. The unit itself is very solid and I don't have too much to complain about. The only "issue" is screwing the thing closed. It can be a slight pain at times. But, overall, I really like this and would recommend it to anyone.

Makes your dumbells more flexible for use.

I was really hoping this bar would work for me. I'm 4'11", 101 pounds and 73 years old. I am on a weight program for strength for my bones and overall health. I need to lift 80-85% of my one lift rep, which is what I'm working up to. I wanted a 4' bar but they are hard to find and really expensive when you do. When I found this, it looked like just what I needed. However, when I received it and put the dumbbells on the end, I found, as one other reviewer stated, the dumbbells shift some each way. And when you're lifting heavy weights, (for my size and being 73), I can't afford to lose my balance when the dumbbell shifts in the middle of a lift. I tried putting a rubber mat around the dumbbell hoping it would tighten the lock but it still did not work. The dumbbells kept shifting and wanting to turn sideways instead of staying straight. Also, I realized that when I was ready to move my weights up, I didn't have many options. I had to put the same amount of weight on each end and that was going to limit how much weight I could change. With a straight bar, I could just put 1 pound each on end if I wanted. With a dumbbell, I would have to put 2 1 pound weights on each end of the dumbbell, on both dumbbells, to keep the weight in balance. So while this may work for people who can control the shifts in weight and the weight change limits, it is not something I can handle safely.

I ordered the Hyperbell/Bar combination in October 2023. The kettle bell handle broke in December 2023, and it was immediately replaced under warranty.The kettle bell broke again this month. In addition, when it broke, one of my Bowflex adjustable dumbbells was damaged (it hit the floor). Not only did Jayflex send me a replacement kettle bell handle, they also covered the cost of the replacement parts needed for my Bowflex dumbbells. Sarah (my customer service contact) made the process super easy, quick and painless. HIGHEST recommendation.Also, they've replaced the older red collars with new black ones on these products. The black collars seem more heavy duty than the red. With the red collars it felt like I could only get up to 50 pounds or so on the kettle bell handle, anything heavier and it would break. Will get back and update how it's going with the black collars once I have a chance to work them out.Really good product that might have been improved, backed by OUTSTANDING customer service.