I'm getting ready to put down an aluminum garage door threshold and before I can do that, the garage floor needed to be as flat as possible. I had one small high spot and needed to grind it down. I bought an inexpensive angle grinder, a diamond disc (here on Amazon) and this shroud.I was concerned about it fitting because I bought a Harbor Freight grinder, not a name brand. It fit great with one of the adapters. The tool for tightening the shaft rings is the wrong size so I had to use the one that came with the grinder. The "universal" hose adapter didn't work for me. I have a 30 year old Shop-Vac and the nozzles are the same diameter as the shroud attachment port. I ended up taking a Shop-Vac replacement hose I had, but never needed and cut the attachments off the ends and that hose fit the shroud and my vac nozzle perfectly. I bought this shroud because it came with that adapter. Don't let the adapter be your deciding factor like I did because it's pretty useless.I actually used this shroud today and it worked great! Not a spec of dust escaped from it and that's why it gets 5 stars. That's the main reason for having this, right? The only thing I don't like is you can't see the disc, so you're flying blind under there and I had a specific spot to grind down. Everything worked out okay for me though. I now have a level garage floor AND it's dust free!If all you need is the dust shroud, this is good. It definitely reduces dust.