1.Different types, for marble, granite, sandstone, etc. 2.Quality can catch up with Tyrolit' ... can be used for cutting normal marble, such as, beige marble, white marble, India green marble, beg variegated green marble. It has characteristics of good sharpness ... coffee netty stone: It can be apply for coffee netty marble cutting. Good sharpness, long life, high welding intensity; trapezoid head ...