The most popular industrial toilet bowl/urinal brush, with medium-coarse fibres for good scrubbing action. Although the fibres are acid-resistant, we recommend using a soft bowl swab for the application of acid cleaners because the stiffer bristles of this brush have a flicking action that may inadvertently splash the user with acid or caustic solution., Stiff bowl brush with aggressive scrubbing action for urinals and toilets, Store in our #816 Economy Bowl Brush Caddy with non-skid bottom