Portable airpolisher, effective and easy to use. Simply connect the handpiece to your dental unitÍs standard 4-hole tubing, when the rheostat is depressed, air flows directly to the powder chamber. The air mixes with the powder and flows to the end of the tip. At the same time, water strictly separated from the air/powder mixture, exits the tip. There the water surrounds the powder/air mixture. The powder/water slurry effectively and efficiently removes stain and tartar.