Design and idea is not bad but the technical functionality leaves something to be desired. Turbo brush attached to a new Dirt Devil DD 5551-3 Infinity rebel 53HF. When held in the air turbo brush but the brush rotates very uneven. Does not really around you see and hear it. But as soon as this rotating turbo brush touches a right carpet no longer rotates, the brush is simply braked turning nothing. If I then, the turbo brush lifting slightly and hovering trying to suck, well then it rotates but vacuuming is something else. For me, a design and functional errors Turbobürste so going back there this is not working in the intended application.