LYNX Pro5 is Designed for Prophy this is a very light weight handpiece that fits nicely in your hand and is easy on your wrist. Factory set speed at 5,000 rpm. Easy Push-Pull chuck accepts disposable prophy angles, metal prophy angles and HP burs/mandrels. Operating pressure 40-45 psi. Autoclavable. Green base denotes 5,000 rpm. 1 year warranty. Made in USA.