Most models for shark vacuum attachment holders are not compatible with the newer IZ300EUT models, which has 2 fins on the attachment rod.

This is a simple model compatible with the 3 attachments for the vacuum.

Printet on a Ender 3v2 Neo with a standard OrcaSlicer profil for the printer.

0.4 nozzle,  3 outer wall and 15% infill.