The proxxon micromot fbs 240e precision drill grinder is ideal for milling grinding polishing brushing removing rust engraving and cuttinga great precision tool for delicate or small jobs which you cant do with a standard drillthe maximum speed of 20000rpm is continuously variable down to 5000rpm the full wave electronic speed control results in virtually constant torque even at lower speeds in turn facilitating micro drilling cleaning and polishing the spindle runs in a precisi