JGB37-520 DC Reduction Motor Comes With Coding High-Torque DC Gear Motor 6V12V24V Adjustable Speed DirectionSPECIFICATIONS Brand Name: Keszoox High concerned chemical: None Origin: Mainland China Features: The JGB37 520 DC motor with encoder is primarily used in speed measurement vehicles, two wheeled self balancing vehicles, racing vehicles, tracking vehicles, robots, maze solving robots, and other related fields. The speed measurement encoder uses a Hall effect encoder for stable performance. *Adjustable Speed Range: With a no load speed range from 7RPM