The file 'Starmix L 1635 DN50 Adapter 3D Printer Model' is (stl) file type, size is 171.3KB.
Adapter for my Starmix L1635 to my HT DN50 vacuum system in my workshop.
It fits (quite tight) to the VACUFLEX PU 400 C ECO
I printed it with a little support (see picture).