This end was designed to fit with the hose below from Amazon, but also works on a few others.
2 ½ in hose - Adapter fits most table saw connections
https://smile.amazon.com/gp/product/B001JBANX8/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
The author marked this model as their own original creation.