This miniature gearbox is of steel and brass construction with brass gears and is mounted on a 1mm think steel bracket. It incorporates a high quality three pole, 500 motor with sintered-bronze bearings. The design and construction of the unit make it suitable for propellers up to 3" in diameter.

Overall length: 4"
6mm Drive Shaft

Four Gearing Options:
MFA16 - 2.5:1 Gearbox - 3200rpm @ 6v, 6300rpm @ 12v
MFA7 - 6:1 Gearbox - 1316rpm @ 6v, 2633 @ 12v
MFA4 - 11:1 Gearbox - 1436 @ 12v
MFA148 - 148:1 Gearbox - 108rpm @ 12v (Perfect for Paddle Wheelers and Side Wheelers)