ULTRA-PRECISION BRUSHLESS MICRO-GRINDER One of the best micromotor systems in the world. The lightweight handpiece allows you to work for long periods with minimal fatigue. The digital display enhances safety and efficiency and the compact and functional design makes the unit portable. Soft-touch switches permit easy operation and long service life. Features: Forward/Reverse Switch One Touch Tool Changing Patented special dust protection mechanism High performance samarium cobalt magnet Extremely quiet operation from low to high speed with stepless speed adjustment Dual handpiece ports for increased work efficiency Kits Include: Handpiece Collets (1/8" & 2.35mm) Controller (NE249) Handpiece Holder Handpiece Stand Wrenches Motor Model Standard Set Torque Set Speed 1,000-40,000 min-1( rpm) 1,000-25,000 min-1(rpm) Weight (w/o Cord) 3.17 oz. 5.19 oz. Max. Torque 4.3 cN·m 4.8 cN·m Output Power 73W 76W