nstallation Steps: Turn off the power and empty the sewage tank; turn counterclockwise to remove the roller; align the bracket slot and screw the roller in. Applicable Model: Our replacement brush roller is suitable for Karcher FC3 FC3D FC5 FC5D FC7 floor cleaner, fully washable, widely applicable. Premium Material: Floor cleaner roller is made of soft microfiber with fine and texture, easy to clean and can be used for a long time. Efficient Cleaning: All kinds of hard floors and dust, footprints, oil stains, red wine and other dry and wet dirt in the home can be cleaned at one time Stable Performance: The coaxiality of the Microfiber brush roller is controlled within 5%, the rotation is stable, the noise is low, and there is no lint.