Desk Whiteboard Artline 550 Pen Marker Holder (Insert)

I use the same three markers all the time. It's much easier to have them readily to hand with this quick insert for my desktop whiteboard marker. 

Very quick to print, Will fit quite a few markers, but I've found the Artline 550A's the best quality with high vibrancy.

It's not structural so print however you like in whatever material you like. 

The one shown in is 0.4mm nozzle and 0.2mm layer height on speed setting.