An awesome way to get even more use out of my power blocks. Definitely not a need, but a really fun and useful upgrade. It is so fast and easy to switch out the handles that I use it almost every workout. I definitely suggest this attachment for any RDL or squats at higher weights, as it is much more ergonomic and easier hold than two separate dumbbells. I do wish there was an option for the handle to go the other direction, because I am petite and it is hard to fit a wide 65lbs of power blocks between my legs for squats/swings etc. I also wish the handle was a little shorter, as again I am short, and I get a reduced range of motion when using it for squats and RDLs compared to dumbbells. But for more typical kettlebell movements this thing rocks!