Contains:

1x 10x20 mm coreless motor
2x brass shaft adapter, length 7 or 10 mm. Outer diameter 1.5mm
1x flywheel 10 x 5 mm

This is a small, but very powerful coreless motor, measuring 10 x 20 mm with a shaft on each side. It is running very smooth and slow at a low voltage. Works straight on 12V, a resistor is not necessary.

DCC compatible. Check for CV adjustments for several brands of decoders the Service>Digital section on the Tramfabriek website.
Specifications:

Diameter casing: 10 mm
Length: 20 mm
Axle diameter: 1 mm
Axle length: 7 mm on the non-contact side, 7.4 mm on the contacts side.
No load RPM at 12V: 14,000
Rated current: 60 mA
Stall torque: 32 g.cm