This is just a mounting base to attach an Arduino stacked with a RAMPS 1.5.7 board to a case.
The 5 holes that holds the RAMPS in place are M3 and has to be threaded.
The 4 holes for attaching the cage to anything is for putting M4 screws through them and have a footprint of 100mmx100mm square.
RAMPS1.5.7_mounting_cage.stl | 456.5KB |