Beam brackets 5x7, Lego compatible

Imported from my designs on Thingiverse. Original upload was 13.03.2019 (dd.mm.yyyy)

2 brackets for you people. The one without all the holes is almost like the original, but the holes on the side are in opposite location.

Added v2 files with 0.25mm smaller fottprint to fit Technic better and added grooves to the oppo.