12V Directly DC Motors with no gearing.
These are simple DC motors, just as the title states. These are a straight DC motor with 
no gearbox whatsoever.
We offer these simple motors in assorted power ranges at 12VDC motors which are appropriate for our selection of DC Speed controllers.
Without gearing, these universal motors are made for scooters or e-bikes using belts and chains (with varying size sprockets) to create high torque or moderate torque with higher speeds!
While 12v Motor primarily made for scooter or go-kart use, these are a popular range for hobbyists and inventors.
While these are low priced motors, there is nothing cheap about the product quality. They are simply motors that are made in such large amounts they can be created with a minimal price point.
The are manufactured in bulk, so while its expensive to get adjustments made (quantity should be purchased) the stock motor is low priced due to its availability and widespread use.