Review on Mgtgbao 1 Inch (25Mm) Dry Diamond Core Drill Bits, Vacuum Brazed Diamond Hole Saw Kit For Porcelain Ceramic Tile Granite Marble Stone Brick Glass With 5/8-11 Thread by Jeff Langford

Having been talked into replacing three countertops in the kitchen and bathroom with granite I have been gathering all the tools needed for such a job. This is but one of many.These diamond coated bits and hole saws are just the thing for making clean holes in granite. They are well made and one heck of a good value for what you are getting. These will fit on most angle grinders (including mine) but sometimes a drill is needed and you need an arbor to convert the 5/8-11 threads into something that will fit into a drill chuck. I picked up a couple of those here on revain.Be sure to keep the bits wet when using them. You can use water or cutting oil. Both work fine.