Robuta

https://www.pololu.com/product/187
The GM8 is essentially a 143:1 version of the GM2 gearmotor. If you want a bit more speed than what the GM2 will give you, this is the motor for you!
gear motorpololusolarboticsoffsetoutput
https://www.pololu.com/product/601/pictures
This sturdy plastic wheel for the GM2, GM3, GM8, and GM9 gearmotors can also be used as a wheel adapter for other wheels or as a mount for other mechanisms via...
gear motorpololusolarboticsgmwmount
https://www.pololu.com/product/601/resources
This sturdy plastic wheel for the GM2, GM3, GM8, and GM9 gearmotors can also be used as a wheel adapter for other wheels or as a mount for other mechanisms via...
gear motorpololusolarboticsgmwmount
https://www.pololu.com/product/183
The Solarbotics GM7 gearmotor with 90-degree output is a compact, 120:1 gearmotor (gearbox with brushed DC motor) that is well-suited for use in small robots.
mini gearpololusolarboticsmotordeg