·Shaft diameter(d)can be:∮6.35mm,∮7.14mm,∮8.0mm,∮10MM ·The bracket can be metal or aluminum. ·A plastic or metal fan propeller is available for cooling the motor coil. ·EMC components are available for anti electromagnetic interference. ·TCO(thermal cut-off)is also available for over heating protection ·Motor rotation direction can be CW or CCW. ·Stator thickness(A)can be increased or decreased to reach different Power and torque.