Liked the model from @HandsomePotato but needed one which fits on my 4040 Extrusions, so removed the drillholes and made them linear. The "handsome" holder has the perfect width to fit onto 4040 extrusions.
Update: I would strongly recommend the STRONGER Version, because this one tend to break too easy.
The tip and the connector you can find here:
The author remixed this model.
removed the holes and made them linear M6 (3x)