I bought the handle with my CT. My CT is my mobile unit. My Fein TII is now my shop Vac. I guess you could push the CT around by pushing on the stacked systainers, not exactly a good option. The handle is great, I would recommend buying it without reservation. One of those Festool acc that is well worth the money. On a bonus note, I use a typical 4' stepladder for regular installs, the ladder sits nicely on top of the handle. Width of handle and width of 2nd rung on ladder match up nicely.