I used it with a diamond grinding wheel on a 4 1/2 inch angle grinder to smooth an old cast concrete retaining wall. I hooked it up to a shop vacuum with a paper bag filter and a HEPA filter. It made a big difference in the amount of dust! The shredder was a Craftsman 900.24542 similar to the Porter-Cable PC60TAG. The angle grinder has a protruding screw that made it difficult to fully install the shroud, so I had to drill a hole in the plastic of the shroud to make room for the screw.