This gearmotor is a miniature high-power, 6 V brushed DC motor with long-life carbon brushes and a 150.58:1 metal gearbox. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter.
That is likely just a trick of the light, these are definitely a full metal gearbox, anything less would definitely strip given the torque these little motors can apply!
Hi James
You need to be more specific.
The text at the top says a gear box of 150.58:1 and your “details for item 3038” in your reply says 29.86:1. The motor listed above is “3066”
Which is it ???