Review on 💎 High-Performance 10mm LOT Diamond Drill Bit by Paul Rosemark

Works very well. However, I broke one. I pushed too hard and part of the bit detached from the hole saw part of the largest. Therefore, exert less pressure when drilling. It cuts very well through porcelain stoneware. I kept sprinkling it with water to keep it cool so you gotta do that with them. If you try to make it dry you will be in trouble. Also use a drill, which is pretty fast. I used a corded drill instead of a cordless Dewalt to make sure it spins faster and is stable. (Not part of the review, but why is this an add-on to Revain when it's sold separately)