Pololu 12V, 150 RPM, 14 kg-cm, 70:1 Gear Motor

QUICK OVERVIEW

This 2.13″ x 1.45″ x 1.45″ gearmotor is a powerful, high-quality motor with 67:1 metal gearbox intended for operation at 12 V. These units have a 0.61″-long, 6 mm-diameter D-shaped output shaft. This gearmotor is also available with an integrated encoder.
Key specs at 12 V: 150 RPM and 300 mA free-run, 200 oz-in (14 kg-cm) and 5 A stall.