This effector is a version of the original one for Kossel Mini adapted for E3D hotend.
It includes the fan shroud for hotend and a mounting for print cooling fan - both 30mm. Should be printed in ABS or other heat resistant material - not PLA.
There is also a Z Probe mounting in the effector.. The engage is done with magnets (6x10mm). Two magnets in effector and two others in the ZProbe. You can wire the Z Probe endstop as normally open, connected to the magnets. The magnets are used to connect the Z Probe to the effector wiring (check pictures).
The hotend clamps are optional, I mean, usually the hotend has a tight fit into the effector.
If you prefer clamping, just print 2 clamps and fasten with 2x M3x16mm bolts and nuts.