To know more details, and STL files of this adapter for the H2D and A1 Bambulab hotends, check MakerWorld post:
MAKERWORLD FILES :
https://makerworld.com/es/models/1993997-adapter-for-h2d-and-a1-hotends-for-elegoo-cc
OTHER LINK FILES:
http://www.mediafire.com/file/8mahsoiqajss85o/H2D_HOTEND_ADAPTER.zip
Enjoy!
