GM12-N20VA-EN 1. small gear head 2. low speed 3. high torque 4.widely used on many products MODEL:GM12-N20VA-EN1.size:12.0*24.0mm,3mm shaft diameter2. Reduction Ratio:1/3,1/5,1/10,1/30,1/50,1/63,1/100,1/150,1/210,1/250,1/298,1/370,1/380,1/10003.weight:35g/pcs4.samples can be offered for your test first. 12mm micro gear motor with encoder GM12-N20VA-EN