magnetic keyholder joint - giunto portachiavi magnetico

This is a real 2 pieces magnetic joint for keychains (or other use).
It permit you to split in two o more parts your big keyholder.
You can modify it but please advice me, I will appreciate your work.
You need 4 little parallelepiped shaped magnets of 1x2.7x5 mm that fits well inside
This thing is made by two parts that fits one inside each other for multiply the magnetic grip ..
The asymmetric shape is only for a simplyfied print, so put it the more protruded side on the printer's bed.
En