ARU Model C4002 ARU Power HO-20 Powered Chassis w/Flywheel Drive (HO/O Narrow)

Wheelbase 20mm, wheel diameter 10.5mm
Gear ratio 1:42
Equipped with flywheel drive
Assembly Adjusted
Washer, screw, lug plate and brass washer are also included.
Includes trolley frame mounting bracket

It can be used for ultra-compact vehicles, bogies, and small HO trains.

Comes with a convenient bushing and lug plate for use as a bogie car.