Review on Kwokker Tungsten Triangle Professional Concrete Product by Jose Guevara

In my life I have seen many different stone bats; it's a breath of fresh air. I was dreading a project that required drilling a dozen or so holes in slabs of stone (about 1.5 inches thick). I always put it off. Finally I decided to make it over Labor Day weekend so I ordered this bit set. Drilling through masonry is never quick, but with patience these bits worked great. I was impressed. Make sure you keep water on it regularly (I used a spray gun in one hand while drilling) and be patient. My experience so far has usually been to make a hole, maybe two before the bit burns out and is ready to be thrown away. These bits have held up very well and are ready to go. Good product. I was positively surprised.