Customized version of http://www.thingiverse.com/thing:543772

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=543772

Using the following options:

numberOfTheetOfInnerWheel = 9
cutoutRadius = 0
outerRadiusOfLargeWheel = 2.5
innerRadiusOfLargeWheel = 1.5
spaceWidthOfLargeWheel = 0.6
topLandWidthOfLargeWheel = 0.2
outerRadiusOfInnerWheel = 2.8
spaceWidthOfInnerWheel = 0.2
topLandWidthOfInnerWheel = 0.2
innerRadiusOfInnerWheel = 1.8
numberOfTheetOfLargeWheel = 8
depthOfInnerWheel = 0
depthOfLargeWheel = 5