Counter-rotating cylindrical brushes and recovery drum provide deep scrubbing at 650 RPMS, providing over three times contact pressure of rotary brush scrubbers. Cylindrical brushes far outlast cleaning pads. Eco-friendly low moisture cleaning uses 30% less chemical and water. Whisper quiet 69 dba level meets Leeds requirements. Easy change brushes are tough and long lasting. One set of brushes = about 100 floor pads. Self-cleaning brushes, roller, and a removable recovery tank yield easy cleanup.