10rpm to 45 rpm 12 v dc geared motors for robotics applications Very easy to use and available in standard size Nut and threads on shaft to easily connect wheel 10 rpm 12 v dc motors with gearbox 6 mm shaft diameter with internal hole 125 gm weight Same size motor available in various rpm 5 kgcm torque No-load current = 60 ma(max), load current = 300