The Fein vacuums / dust extractors are designed for heavy, continuous, industrial use, wet or dry. The improved, rugged anti-tipping design features a powerful 120volt two-stage motor that offers bypass cooling, ensuring a long motor life. Vacuum performance measuring at 90 to 99 inches of water lift means Fein dust extractors produce far greater suction than the competition, at an average of 60 decibels. All three models come with electronic variable suction control with LED indicator allowing for maximum performance, auto-start function, and integrated drain plug. Accessory filters are available that capture particles down to .3 micron (HePa). The Fein dust extractors when combined with Feins random orbit sanders are an integral part of Feins 98 dust-free sanding system. Plug your random orbit sanding system into a Fein dust extractor. The tools switch turns the dust extractor on and off and provides a ten second delay after shut off to clear the hose. Maximum performance can be achieved by adjusting the electronic variable suction control. Fein dust extractors handle power tools with inputs of 5 to 2000 watts (.05 to 18 amps). ..