Review on 🔹 SHDIATOOL Diamond Stone Tiles: Porcelain, Granite, Marble by Dusty Tofte

I'm a professional plumber who bought these with the price in mind, what difference does it make if I just have a few holes in each bit. To my great delight, I have made multiple holes in granite countertops, porcelain stoneware and quartz countertops over and over again using the same bits. I highly recommend a drill adapter as it is very rare that a grinder (or associated dust) is needed. Drilled through a 1 1/2" thick black granite countertop in less than 60 seconds today with my cordless faucet attachment drill bit. Highly recommended.