The motors in the micro drive product range include brushless and brush DC motors with diameters between 6 to 10 mm, the design of which brings substantial benefits to customers. DC motors with ironless winding are characterised by the absence of magnetic detent, rapid acceleration thanks to a low moment of inertia, low electromagnetic interference, low inductance, and high efficiency. This group includes the RE 8 with an external diameter of 8 mm and 0.5 watt assigned power rating and the RE 6 at 0.3 watt. Both have high-tech ceramic shafts which are superior to steel ones in many respects. At 0.8 mm in diameter, their motor shafts are as thin as a pencil lead.