I love my Festools, but I cannot for the life of me justify the expense of the cleaning attachments for the CT, how much better than Shop Vac cheapos can they be? Any way, the shop vac attachments mostly have he same OD as the CT hose. I wandered around through my local Ace hardware and found a great fix. For $5 I got a 6 foot long piece of 1.25ID foam pipe insulation. As it turns out this stuff is slit on the side, but the slit isn't all the way through the wall. I cut a four inch section for each of the attachment I wanted to use and can now plus the CT hose in without hassle.