Review on Masonry Management Concrete Plastic Tungsten by Brad Jeffress

I used these nozzles to remove grout from a 900 marble floor tile that was stained with ash and soot during a wildfire in California. The 4 blade design was perfect for use with a hammer drill. They never faded Different widths and angles could be used to grind the grout and bevel the tiles. I bought 3 more kits for concrete and other stone work!