DC Gear motor 12V,200RPM  High Torque Gear-Box Electric Motor 5W Speed control. It is great for speed control . Replacement your electrical and testing equipment a new lease of life . Benefiting from high torque and low noise . This motor is solidly constructed .
This motor suitable for most of high torque applications .Zhengke ZGB37RH 12V 200rpm Gear Motor Reduction Motor DC Motor .

wap out a poorly running or downright faulty gear box motor for this brand new, high quality 25mm, 12V, 300RPM replacement and give your electrical and testing equipment a new lease of life.Benefiting from high torque and low noise, this motor is solidly constructed and ready to install in numerous applications. 

Features of DC Gear motor 12V,200RPM:

High efficiency and low noise.
Durable and long service life.
Suitable for DIY or mechanical work.

You can buy also more robotics component 

Brushless Motor

DC GEAR MOTOR 12V,1000RPM

DC GEAR BOX MOTOR (12V,300RPM)