A year or more ago, I bought a new shop vacuum as my old one was over 35 years old craftsman and it was getting hard to find filters for it. I replaced it with a 16 gallon Ridgid wet/dry vacuum. While I was at it as I had my CFO's permission (aka SWMBO)I also bought an accessories kit https://www.homedepot.com/p/RIDGID-1...2534/100638355 I thought might come in handy for cleaning our cars .
Today I was pleasantly shocked to find that one fitting in that kit mated perfectly with the dust collection fitting on my older Dewalt ROS. It worked great!