A simple rack for storing standard sized vacuum attachments on my toner vacuum cart.  It's a pretty niche part, but I figured I would share.  Mounting holes are 5mm. Outer diameter of attachment posts is 30mm. I printed it with low quality setting in Cura.

Layer Height: 0.28mm 

Supports: Yes

Printer: Ender 3

Material: Sunlu PLA, Black