The twin concept makes for high force output in a compact body, in this case a stall force of 20N. This gives a more robust design without the need of ball bearings.
It has direct drive with no backlash and can microstep in the sub-nano millimeter range. Does not come with built-in encoder but the motor comes as three different versions; standard stainless steel for normal environment, a vacuum version and a non-magnetic vacuum version.
Full force power-off locking is a safety function inherent to the design.