•Internal Spray, separated water and air supply tubing, better cooling system. Simple to operate, fast to connect. •Long lifespan by the Japanese ceramic ball bearing and self-lubricated system on the air motor, low-maintenance. •Outstanding appearance, ergonomic shape. •Dust-free cap on the head of straight handpiece, hygiene-friendly. •Forward/reverse drive. •Speed range from 18,000 to 20,000 rpm. •One set: Straight handpiece, Air motor, Contra angle