Tamiya Mini Motor Low Speed Gearbox 4-Speed

This is the Mini Motor Low-Speed Gearbox (4-Speed)
from Tamiya's Educational Construction Series.

FEATURES
Type 030 motor includes a low electricity consumption rate and
    does not release electronic noise
Motor specs: 8400RPM, Voltage: 3.0V
Gearbox features 7 various equipment ratios (71.4:1, 149.9:1, 314.9:1,
    661.2:1) which can be quickly adjusted by changing the last
    equipment accessory position
3mm hex shaft and gearbox accessory holes work with
    other Tamiya craft items
2 various gearbox accessory positions are available
Transparent equipment case to show the internal mechanisms
Pictorial assembly directions

CONSISTS OF:
One Mini Motor Low-Speed Gearbox (4-Speed)

NEEDS:
Assembly
Hobby knife (RMXR6909)

SPECS:
Length: 1.18" (30mm)
Height: .78" (20mm)