Review on 🔧 Mgtgbao Carbide Concrete Masonry Plastic Cutting Tools and Industrial Drill Bits by Mike Wallace

I used these bits to remove grout from ash and soot stained 900 marble floor tiles 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!