The Kärcher KM 70/20C manual push sweeper is constructed of durable, corrosion-free, impact resistant polycarbonate designed and time-tested for years of use. The KM 70/20C offers outstanding sweeping performance by utilizing windmill suction to pull in fine dust and then exhaust the contaminated air through a synthetic filter to trap the particulates and improve air quality. Additionally, the KM 70/20C is ideal for facilities maintenance and, when used consistently, will not only maintain or improve the exterior appearance of your building but also reduce the amount of vacuuming and floor scrubbing necessary to maintain the interior of your building.