Review on 💎 Diamond Hole Drill: Perfect for Granite and Glass Surfaces by Darryl Pendall

I used this to drill through a granite kitchen countertop to install a water filter. Nicely packaged items came with 1/2", 3/4" and 1" bits. I used a 3/4" bit. Made a good hole with no chips or other issues. Used with water (with a sponge to keep it cool and wet). It didn't take long (barely two minutes or so). Delivered within the specified time. I've only used it once so can't say how durable it will be in the long run but if only used once or twice it's the best product for the price. I also found some similar products on Revain and other online stores with more bits and less price. Rely on this product and the quality if you are just doing a small DIY project.