This Rotary floor tool comes with two jets which rotate at 2000rpm giving a superior clean compared with other similar products. The Rotowash gives excellent cleaning results with minimal effort. The optimum performance is 200 bar at 15 litres per minute but it will work at 100 bar and 11 litres per minute. Hot or cold water can be used, hot is best where oil and grease need to be removed. No chemical is neccessary.