This is a 4-Speed High Power Gearbox H.E.
Assembly Kit from Tamiya.
Gearbox features four gear ratios (39.6:1, 47.6:1, 61.7:1, 74:1)
Gear ratio can be easily adjusted by changing the motor pinion
(10T, 12T), spur gear position, and altering the middle and final
gear attachment position
4mm dia. threaded driveshaft included
Gearbox is compatible with other Education Construction items
Type 260 motor included - RPM: 5040-6300, Voltage: 1.5V Recommended
Separately available 130 and 140 motors can also be attached with
the included adapter
Two 12mm hex wheel hubs included
H.E. denotes High Efficiency
Pictorial instructions included
One 4-Speed High Power Gearbox H.E.
Length: 2.71" (69mm)
Width: 1.25" (32mm)
Height: 1.1" (28mm)