Review on Z Lion Diamond Grinding Polishing Granite by David Guliford

After receiving a $1300 return offer for just 2 prefabricated granite slabs (only to install as I already had the slabs) I decided to do it myself. I ordered them to cut out the radius corners of my sink and then 4" flat diamond trim for everything else. They definitely did their job, 50 was able to press the last 1/8th of the material onto my lines. The rest of the grits put a nice shine on it ...but the pads wear out very quickly.As I was working I literally saw the color of the pad in the water.I ran it all wet with a buffer motor at 2400rpm.The flat pads mentioned here at Revain as a good choice , showed no visible wear after 2 consecutive days of polishing.leads me to believe they are not diamonds at all.