PRR Fairbanks-Morse H10-44 #9187 DC Features; Heavy Die cast Chassis for maximum Tractive effort, DC motor with superrite anisotropic magnets, Sintered bronze oiless bearings, 5-pole skew wound balanced armature motor with amp draw, All-wheel drive and all wheel electrical pick-up, Machined brass flywheel, Precisely-meshed worm gear and helical gears for silent running & PROTO MAX Couplers.