MK Diamond 164111 MK-250GXC 4-Inch Premium Dry Cut Grade Blade for Granite and Porcelain Tile 4 by .060 by 7/8 inch-5/8 inch Dry cutting blade Premium grade continuous rim blade For cutting granite and porcelain tile Diamond blade Special formulation of soft and industrial grade diamond chip content combine to make this blade very high performance in dry applications Unique heat slots effectively dissipate heat without needing water to cool blade Blade is very effective when making on the job cuts with 4 inch dry cutting saws Premium dry cut blade for cutting granite and porcelain tile