I have been using the kettlestacks since January and have found them to be very easy to assemble, use and it does almost everything a regular kettlebell does.
Since the plates are adjustable you can also set them lower than the cast KBs without hurting the forearms of beginner Kettlestackers. More on kettlebells !!
I love them...I was just on my way out for some clean & jerks actually. The adjustments are easy and quick which is great while training other people. In fact it's the best equipment purchase I've made in along time...I'm so glad I did not go with an imposter kettlestack. Anyway it's exceeded my expectations and I'm very happy. KK, Ohio
I like the fact that I'm able to change the weights with this unit (kettlebells by kettlestack) as my sons(age fourteen) can use it also. They think I dream this stuff up to torture them. We're trying to get Mom involved also. More on kettlebells !!