Review on Disston 4435 Xtreme Coated Glass Tip by Ricky Pee

I don't have much tile drilling experience but had to drill 10 large holes in subway tile. This bit made the job pretty easy and still has a lot of life left in it. FWIW, when I started the drill (medium speed) about every 15-20 seconds I would stop and dip the tip in the water (to keep it cool).