1. 2 motor and 3 gear sets to have wheels running in different directions
2. 3 kinds of gear ratio and output
3. wheels, tires and all other necessary parts included
4. easy to follow instruction manual included

1. contains: 2 motors, 3 set gears, metal shafts, gear box and other accessories
2. motor: 3 VDC / 12500 rpm
3. gear ratio:
   1. 1:60: 200 rpm output
   2. 1:120: 100 rpm output
   3. 1:288: 42 rpm output
4. power supply: 2 x 1.5 V AAA or 2 x 1.5 V AA (not incl.)

kns15a4v01_en.pdf