Dagu - 34:1 Metal Gearmotor with Magnetic Encoder (6VDC / 285rpm). This is a powerful DC motor fitted with a 34:1 gearbox. The gears are all steel and the outputshaft is 4mm diameter. These motors now come with a Quadrature Magnetic encoder fitted on the output shaft to provide accurate speed measurement and control. They are compatible with the Wild Thumper Robots and are suitable for any project requiring a fast, robust DC motor.