Voltage:220-240V Cycle:50hz Electric Power:35w Speed:0-30000RPM.MAX Max.Torque:2.2Ncm Clamping range:2.35mm Dimension:130*130*80mm STANDARD ACCESSORY Control Box:1pc Handpiece:1pc Handpiece Stand:1pc Foot Pedal:1pc Change the speed constantly and discretionarlly ranging from 0 to 30000 per minute Left and right direction of rotation can be chosen High-speed bearings make the handpiece with low heat,low noise and low vibration Quick change for grinding system without using auxiliary tool can improve work efficiency greatly independent pwer switch can be more secure and reliable Hand foot variable speed control systems are chosen.Both hand and foot can raise working efficiency LED speed through signal display Slide-type speed control switch is for easy operation