The mount is custom design, fan adapters are based on: http://www.thingiverse.com/thing:715119.
It holds the e3d v6 very firmly and the cooling is very effective.
No Z height is lost with this mount.
25.5.2015 - Updated radial fan adapter to v3. The v2 was blowing too much air at the nozzle which might have caused filament jams.
Update 18.04.2016 - added source files in STEP format for the people who requested it. Also added a V5 fan mount with slightly simplified design for better printing and added a little beam do divert the airflow away from the nozzle. (It is a theoretical thing, not really sure if it works.)
Printed using PLA, slic3r set to 0.3mm layer height, 3 perimeters and about 25% infill. The fan adapters can be printed as shell only.
M2.5x14 screws and nylocks are used to mount it to the effector platform. The top and bottom part of the mount are connected with M2.5x8 screws.
The fan adapters are designed for 50x15mm blower fans.
Set your fan speed in slic3r / cura to max 50%, otherwise the airflow is too strong for the nozzle to keep up with cooling.