Desk holder for Short Standard International ink cartridges, with either the pen/ink interface facing up or down. Both files hold 9 cartridges, but the interface up files can be updated with the “cartridges” variable.

Somewhat parametric files available on Onshape: https://cad.onshape.com/documents/2c3fd176ce6226f2fe5bcc28/w/961a06158999d3714d98e133/e/93a98af5ca21675cce1c6a61?renderMode=0&uiState=68e698c01494860b0191c746