The CAT Diamond Tools 4-1/2 in. 400 Pro Universal/Multi-Material Diamond Circular Saw Blade has been engineered and designed for application versatility and to cut aggressively yet smoothly on a wide variety of hard materials and general building materials, whilst still having the ability to cut occasionally more abrasive materials. Cooling holes keep the segments and metal core cool during the harshest of cutting conditions. Featuring a fully hardened and heat-treated steel core, this saw blade is sure to hold up through multiple jobs and projects.