This Geerpres Royal Prince Wringer is the perfect complement to one of our cleanroom approved mop buckets. The stainless steel wringer allows it to be used in a cleanroom due to its ability to not harbor bacteria. The stainless steel is electropolished to make the surface very smooth, so bacteria and foreign particles have nothing to attach themselves to. The stainless steel allows autoclaving and will not rust, discolor, or deteriorate with proper care. Downward-pressure action wrings mops up to three times faster than other wringers to boost productivity and reduce costs.