A review at bodybuilding.com

From this page:

forum.bodybuilding.com/showthread.php?t=106613961&highlight=kettlestack

I have to say Im pretty impressed with this thing. Dont even bother if your playing with anything less than 35 or 40lbs as it becomes more of a hassle to adjust it. I got 60 on it and swings and snatches are the same as a regular old kettlebell. Two hand swings are pretty good though my hands are pretty huge in width. Pretty Cool investment. Recomended if you play kettlebells.