Review on Enhance Your Cutting Precision with the Lenox Tools 1211110DGDS Diamond S 10DG by Chris Peck

Excellent product. I installed 7 porcelain stoneware handrails with Wingits. I first tried using Wingits Apache 200 drills which were designed for use with Wingits. The porcelain destroyed the bits. I suspect the bits will work for ceramic tile but not porcelain. I cut all the remaining holes (4 per rail) with a Lenox Diamond Grit hole saw without incident. In fact, after my bad experience with the Wingits Apache 200 bits, I was afraid that I would get a partial revision and have to order another one, so I immediately ordered 2. Turns out I only used one and it's still good! If you've never used one of these hole saws, watch the YouTube video first. If you get it right and keep the bit cool, you can use the saw for a lot of holes.