N,HOn30,HOe,009, RTR super slow drive cahssis, OSO power, six variations

There are several variations. Please select the wheel size and wheel base.
The spur gears were changed from plastic to brass.

Features
- 9mm gauge for N gauge, HOn30, HOe, 009, etc. Ready-to-run drive unit.
- There are six variations.
Wheel dia.: 6.0 and 7.0mm, wheel base: 12, 14, 16mm. 
You can choose the sizes you prefer. 
- The chassis is made of 3D printed high performance UV resin.
- Our 12V coreless motor, M0.2 gear system are used on the chassis that enables realistic run from extremely low speed (33mm/s-6V*). The drive chassis is coated to reduce wear and already painted black.

*Millimeter speed per second at 6V that was calculated from no-load motor rotation speed. 

#6151: 6.0, 12mm
#6161: 6.0, 14mm
#6171: 6.0, 16mm
#6181: 7.0, 12mm
#6191: 7.0, 14mm
#6201: 7.0, 16mm