BRICK CUTTING - Use Brick Boss diamond blades for cutting brick (up to 5,000 psi), most types of stone such as granite and quartzite and similar materials. Not intended for use on materials such as concrete, asphalt, concrete block or sandstone. EXTRA WIDE U SHAPED SLOTS - Features 10MM tall diamond segments with deep and wide U shaped slots. The wide slots allow for better cooling and faster removal of the cutting debris, thereby increasing cutting speed. HEAT TREATED HIGH-SPEED STEEL - The core is made from heat-treated high-speed steel and is guaranteed to withstand the demands of dry cutting. SPECIFICATIONS - Blade measures 14" diameter X .125 (1/8") thick with a 1" arbor hole and 20mm bushing for Stihl power saws. It can be used on masonry saws, hand-held power saws and bridge saws. Operating RPM is 2,500. Max. safe RPM is 5,460. LIFETIME WARRANTY - All Delta Diamond Products, Inc Diamond Blades, Coring Bits, Hole Saws and Grinding Wheels include a lifetime warranty against warping, cracking, and material defects. If any diamond tool (being used under its intended use with at least 50% wear left) fails to cut or work properly, or if the bond between the diamond segment and the steel core becomes separated at any time, the diamond tool will be replaced.