20mm Dc gear motor: 1.Rated Voltage:3-24V 2.Speed:3-1500 RPM 3.Stall Torque:12kg.cm 4.Reliable performance,Large torque 20mm dc gear motor,Can be equipped with encoder 1.GM20-180SH with 130sh2.Voltage:3-24V3.Speed:3-1500RPM4.Stall Torque: 12kg.cm5.Life time: 1000H. 6.Low noise,low current no spark7.Motor with encoder,16 pulse signal8.Reduction Ratio:3-15009.size:20*45 mm,just 50.0 mm length mini ...