Pololu 499:1 Metal Gearmotor 25Dx58L mm LP 6V

This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 498.87:1 metal spur gearbox. The gearmotor is cylindrical, with a diameter just under 25 mm, and the D-shaped output shaft is 4 mm in diameter and extends 12.5 mm from the face plate of the gearbox. This gearmotor is also available with an integrated encoder. Key specifications: voltage no-load performance stall extrapolation 6 V 11 RPM, 250 mA 30 kg⋅cm (400 oz⋅in), 2.4 A