The Woodpecker PT-A is 2 in 1 smart system which contains Air Polishing and Scaling, also has an easy to understand and adjust touch screen display. The PT-A is your complete prophylaxis solution. Air polishing uses compressed air to spray powder and water on the tooth surface to remove surface adhesives such as plaque. It is comfortable for the patient, powerful and does not scratch the tooth surface. The PT-A has dual water supply bottles and a multi function foot pedal.