This 4-Speed Worm Gearbox H.E. is of the type which is often used at robotics contests and features a low RPM rate for great torque output.
There are four gear ratios (84:1, 216:1, 555.4:1, 1428.2：1) to choose from, with the 1428.2:1 ratio offering an RPM of seven times in one minute.
The included gearbox attachment parts can be installed at a choice of two positions.
A 4mm dia. drive shaft, three kinds of crank arms, and Type 260 motor included.
Separately available Type 130 and Type 140 motors are also compatible.
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