1.Change the speed ranging from 0 to 30000 per minute. 2.Left and right direction of rotation can be chosen. 3.Japan bearings make high quality handpiece with Low heat, low noise and low vibration. 4.Quick change for grinding system without using auxiliary tool can improve work efficiency greatly. 5.Independent power switch can be more secure and reliable. 6.Hand, foot variable speed control systems are chosen. Both hand and foot can raise working efficiency. 7.Slide type speed control switch is for easy operation. |