12mm N20 motor kit (300 RPM)

1) N20 gear motor:
Body Size(Including Reduction Box):35.8 x 10 x 12mm
Shaft Diameter: 2.9mm, D Shaft
Shaft Length: 9.4mm
Voltage: 6v
No-load speed: 300RPM ±10%

2) Rubber wheels:
Diameter:44mm
Thickness:17.7mm
Aperture:D Shaft 2.25mm hole
Material: ABS engineering plastics+import rubber