a-218:electric power grinders in order to ensure you use the device rightly, please operate the device under those procedure. 1�dimproved-motor technology for polishing, cutting, grinding,curving. it can machine all materials used in the dental laboratory, such as gypsum, plastics, metals, precious metals, titanium and ceramics. 2�dprecise concentricity makes it extremely quiet and vibration-free with minimal heat generation. stabilized speed over the entire control range. 3. it is equipped with hand-foot switch and forward-rearward switch. 4�dbefore using, please make sure the burs is coaxial to the hand-motor(the diameter of the burs must be less than 8mm.) ,and locked the burs .choice the fit speed, then you can use it . 5�donce the burs is not coaxial to the hand-motor,the device is likely to librate , and it may worsen the object. 6�dthe speed of the motor can be adjusted when it is working .overload is forbidden .when it works on overload, the speed may decrease. 7�dwhen the work is finished,you should shut up the electricity source,and leave the machine on the dryness, airiness place . 8�dwhen the device does not work, you should send it to the dealer. the machine must be repaired with the oriental parts. the force-work is forbidden. system contents: serial no. title number note 1�d control unit 1 24v 2�d hand-motor 1 24v 3�d foot-pedal 1 4�d grinders stand 1 5�d lever 1 6�d interpretation 1