This is full sized floor turbine brush attachment that fits the Rotho Water filtration vacuum cleaners. This turbo brush uses a internal turbine that's powered by the suction of the vacuum cleaner to drive a rotating brush roller. This is an excellent attachment to use on delicate oriental rugs where the power nozzle is to strong, as well as medium to low pile carpets. The rotating brush action is especially helpful for homes that have pet hair problems. With a vent slider on the top of the tool, you may vent some of the suction when vacuuming delicate rugs, or bathroom rugs, to prevent the rugs from being vacuumed up into the vacuum. Genuine Rotho attachment, model TB280, part 787-227.