magnetic keychain quick release

This is my design of a magnetic quick release, for 10 x 3mm neodymium magnets. The magnets are put inside the parts mid print, for that the print is paused at the start of layer 18.It is recommended to print the magnets in the front quarter of the print bed so that you can easily reach the print when the bed is still up.Keep in mind that you pace the attracting sides of the magnets facing down in the cutouts.The dimensions are: Diameter: 12mmLength: 2*12.5mm = 25mmHole diameter: 4mm