This is the single motor cousin of the Double Gearbox. Its basically the same, just with one motor instead of two. The double gearbox is one of the most useful in the Tamiya line, so this is a great option if you like the ratios provided by that one but need more flexibility in positioning your motors or output shafts.
The ratio options are 12.7:1, 38:1, 115:1, 344:1 (identical to the Double Gearbox). The included motor is also the same 3V hobby motor, and the 3mm steel hex shafts are the same (they are 10cm long).
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