Plastic Gear Box Motor is available at a lower cost than metal gear motors these motors with plastic gearboxes can be the ideal drive system for a small robot. These DC Geared motors with robust Plastic gearbox for heavy-duty applications, available in the wide RPM range and ideally suited for robotics and industrial applications.
The gearbox is sealed and lubricated with lithium grease and requires no maintenance. These standard-size DC Motors are very easy to use. Also, you don’t have to spend a lot of money to control motors with an Arduino or compatible board.