Koss Porta Pro adapter for Foldable Headband

This is the connector pin you can use to attach your Koss PortaPro cups to the printable foldable headband below

There are two files;

Pin-PortaPro-Standard.stl: Print and try these first, they should work for the majority.

Pin-PortaPro-Tight.stl: In case you've attached/detached your PortaPros to/from many different headbands, the connector might have worn out and the standard pins may stay loose. Then you can try using this version that connects stronger to the cups.