Review on Carbide KangTeer Tungsten Cutting Grinder by Justin Pavelko

These carbide grinding bits eat up metal like you won't believe. They last a long time if treated properly. I use them in steel and bronze for stripping welds. Making the inside of a small hole is the only time I've messed up those details quickly. If you push hard and the bit jumps from one side of the hole to the other, the shank can bend. When this happens you will notice a bad vibration and your racket will end. time for a new one. My advice is to remove the metal as slowly and carefully as possible. I wouldn't buy anything other than a carbide hole saw. Harbor Freight's are garbage. I keep a few of these in stock simply because they're so cool, and sometimes I really need them because nothing else is good.