Mercury Ultra D.C. High-Speed Burnisher 21", 1.5 HP Motor, 1170 RPM Brush Speed DC-21-1170The Mercury Ultra DC High Speed Burnisher DC 21 1170 is engineered to deliver a high gloss shine across large commercial spaces with efficiency and precision. Featuring a robust 1. 5 HP motor and a 21 apron, this burnisher ensures fast, professional results while protecting walls and baseboards with its non marking bumpers. Designed for professionals, the DC 21 1170 operates at 1170 RPM for superior polishing performance. With an all metal chassis for