I designed this adapter to be able to use vacuum adapters that I printed that didn't fit well.
For HF Bauer 6 gallon shop vac
Specifically I chose to use 1-7/8" ID Hose attachments from “Vacuum nozzles for all common hose sizes” by Max on printables. These were just a little looser than I'd liked on the end of my hose so I designed an adapter that fits nice and snug on both parts.
The part is slightly embossed.
The author marked this model as their own original creation.