... mini instrument, financial apparatus, medical device, etc.• 25mm gear motor provide 0.5Nm torque• Voltage range: DC 3V ... gear ration• 3.5mm D shaft , shaft length can be customized• Can match with pins, wires, and encoders(11ppr)• Reduction ... ratios & gearbox length:Gear Reduction Ratio Length (mm)Gear Reduction Ratio Length (mm)Gear Reduction RatioLength (mm)1: ...