Holder for NEMA17, Coupling and Bearing

This holder is made for the installation on 20x20 Aluminium Profiles. It has mounting holes for Ball Bearings 608 and a Nema 17 Stepper. Inbetween a coupling can be installed.
More: https://www.youtube.com/watch?v=y_Zl_7EczHg&feature=youtu.be
and:
https://www.multec.de/-Multirap-M300-Pro