What the hell was I thinking? I've been installing safety rails using a mason's drill bit to drill through ceramic tile for 20 years. Yes it worked but several times I broke or cracked the tile. I tried these beats for the first time a few weeks ago. You know the expression "like a hot knife through butter"? That best describes how they worked! The square shank allows me to use it with an impact wrench, which is much smaller and lighter than a hammer drill. The end result is cleaner, tidier work done faster and with less effort. I kick myself for not getting them sooner. There is nothing better for drilling ceramic tile or glass. But remember that for porcelain stoneware it is best to use a diamond drill bit. It's insanely difficult!