Tamiya 72005 6-Spd Gearbox High Efficiency Kit

This precision 6-Speed Gear Box, High Efficiency, is a compact unit with a variety of gear ratio options to choose from. Several crank arms and a RE-260 motor are included. Perfect for many Tamiya Construction and Robotics projects. Gear Ratios: 11.6:1, 29.8:1, 76.5:1, 196.7:1, 505.9:1, 1300.9:1. Operates on 3 volts. Requires two AA batteries (sold separately).