While it clearly states that this bit was made in the USA, this is not the case. Typical Chinese junk! I will never be fooled by Irwin tools again, I just won't buy them.
Did the job of drilling four holes in the bathroom tile to install a towel warmer. I used a Black and Decker cordless drill and the drill took a little time to catch and make the first piercing, but once the head was recessed I drilled through so I could set the anchors.
I was trying to use this drill on a glass mosaic tile. It didn't even work remotely. Having barely dented the glass, I tried it on travertine tile and it took forever to pierce halfway through the 1/4" thick tile. Having never used a tile beater I can't comment on its comparable performance but I had higher expectations than what I got.