This is an 18 inch scrubber dryer from Numatic. The operator chooses when & how much of the cleaning solution is fed down through the heavy duty scrubbing brush on the front of the machine. The rotation of the brush gently pulls the machine along making the cleaning process practically effortless. At the rear of the machine a curved vacuumated squeegee collects the slurry & deposits it into the 30L waste tank. When you have finished the task simply remove the 2 recovery tanks from the top of the machine & pour the dirty water away. This machine will hold up to 30L of cleaning solution.