These are standoffs for mounting PC Boards in enclosures. No need to drill holes for your PC boards, just GLUE the standoffs inside any plastic or metal enclosure, and mount the controller with M3 or 4-40 short screws.
You get EIGHT standoffs, four 0.3" tall and four 0.16" tall. Screws are NOT included. To use, just twist them off the assembly.
5.28 w x
0.78 d x
2.079 w x
0.307 d x