12V Straight DC Motors with no gearing.
These are simple DC motors, just as the title declares. These are a directly DC motor with no gearbox whatsoever.
We offer these simple motors in assorted power ranges 
at 12VDC motors which are compatible with our selection of DC Speed controllers.
With no gearing, these universal motors are designed for scooters or e-bikes using belts and chains (with varying size sprockets) to create high torque or medium torque with 12v Motor higher speeds!
While primarily made for scooter or go-kart use, these are a popular range for hobbyists and inventors.
While these are low priced motors, there's nothing cheap about the quality. They are simply just motors that are created in such large amounts they can be created with a minimal price point.
The are produced in bulk, so while its expensive to get adjustments made (quantity should be purchased) the share motor is low priced because of its availability and widespread use.