MK Diamond MK TPX/40 is a Supreme Grade Multi-Application Blade. 7 in 1 multi-application diamond blade is designed for maximum life and speed. A newly developed bond allows for cutting a wide variety of materials including asphalt, block, granite, brick, concrete, bluestone and pavers. 1) NOISE REDUCTION: The laser welded segment over the gullet design helps to reduce noise by as much as 10db while providing efficient removal of cutting debris. 2) COOLER CUTTING: The additional core cutouts provide improved cooling during deep cutting, which helps keep the core from warping or losing tension 3) LONGER LIFE: The tall segment heights provide 30% more cutting life. An outstanding blade!