E3D v6 Bowden head for prusa i3 40mm Fan and 18mm Sensor

A V2 of my E3D v6 Prusa i3 Mount with 2x 40mm fan ducts http://www.thingiverse.com/thing:1554543

This is meant to carry a capactive sensor of 18mm diameter, i personally used that one
LJC18A3-B-Z/BX 3-wire 10mm Capacitive Proximity Sensor Switch NPN DC NO 300mA
http://www.ebay.com/itm/LJC18A3-B-Z-BX-3-wire-10mm-Capacitive-Proximity-Sensor-Switch-NPN-DC-NO-300mA-/121864216190?hash=item1c5fac5e7e:g:29YAAOSwFfhXjOeo

The files i used to print the head on the photo are