NSK Ultimate. This unit was display unit at shows. Being sold as used as one or two slight scratches on top of unit.( See pics). But unit really is new. Complete set up unlike others sold on eBay. Looks like brand new condition as is basically new unit. Fully tested by our in house tech, and all works as it should. Famous NSK Japanese quality. Very powerful 50,000 rpm. Brushless motor. Number one desired unit in dental labs and dentist offices.others sell for over $1695.00