I wanted to be able to cut to length a section of 2-1/2" vacuum hose and put new fittings on it - so I could buy hose in bulk (https://www.amazon.com/dp/B019C23JIQ) and make my own lengths. I could not find anything commercially available. The tapered end fits most shop vacs/cyclones with 2-1/4 tapered receptacles. The ribbed end fits 2-1/2" ribbed hose. I've included the Fusion file if you need want to modify. There are (2) bodies, the second one is the one published here, and in the first sketch, it is the profile on the left. The ribbed end is a snug push fit into the ribbed hose.