Tamiya 53422 - Aluminum Pinion Gear 44T/45T OP-422 田宮遙控車備用配件 雙星孖星  [53422]

This might be a set of Aluminum Pinion Gears for TA-04 framework automobiles.
This is actually the gear that attaches toward motor.

FEATURES: Aluminum construction

INCLUDES:

• One 44 enamel pinion gear
• One 45 enamel pinion gear
• Three 3mm set screws
• One allen key

REQUIRES: Installation onto vehicle.

SPECS:

• 45 enamel gear diameter: 18.7mm (0.74")
• Pitch: 0.4 M (48P metric)

RESPONSES: it will be possible these gears may work on other 48P automobiles.