1093-POLOLU 30:1 Micro Metal Gearmotor HP 6V
This gearmotor is a miniature high-power, 6 V brushed DC motor with a 29.86:1 metal gearbox. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter.
Key specs at 6Â V: 1000Â RPM and 120Â mA with no load, 9Â oz-in (0.6Â kg-cm) and 1.6Â A at stall.