Polycrystalline diamond-tipped teeth will last up to 15X longer than standard carbuye fiber cement blades. Thin kerf blade produces less dust than continuous rim blades. Ground and hardened plate body provides smooth and accurate cuts. IRWIN Tools Fiber Cement PCD Circular Saw Blade, 12-Inch, 8T (4935625) Working with fiber cement boards or siding puts special demands on your tools, and the Irwin Marathon 12-Inch by 8T Polycrystalline Diamond Fiber Cement Circular Saw Blade is up to the challenge. Built to provide smooth, accurate cuts while producing less dust than standard carbuye fiber cement blades, this application-specific circular blade helps you handle big jobs quickly and safely. And it is designed to last 15 times longer than a standard carbuye fiber cement blade.Marathon 12-Inch by 8T Polycrystalline Diamond Fiber Cement Circular Saw BladeAt a Glance:Low tooth-count configuration for application-specific performancePolycrystalline diamond-tipped teeth for extended blade lifeGround and hardened plate body for smooth, accurate cutsNotched, thin-kerf design for reduced dust productionHandles up to five stacks of fiber cement at a timeCan cut up to 9,000 feet of tough fiber cement materialsThe circular saw blade is ideal for cutting fiber cement boards or siding. View larger.The thin-kerf design cuts down on dust production, and the diamond-tipped teeth offer extended blade life. View larger.Ground, Hardened Body for Smooth, Accurate CutsIn order to perform well, a saw blade needs to start out flat and stay true throughout its life. Irwin Marathon blades, like this 12-inch fiber cement blade, feature well-balanced bodies that are laser cut then ground and hardened to help you achieve cuts that are smooth and accurate. This leads to more efficient work flow and cleaner, more precise end products.Polycrystalline Diamond-Tipped Teeth for DurabilityOverall performance often comes down to the configuration and dependability of a blade's teeth, and the long-lasting 12-Inch Polycrystalline Diamond Fiber Cement Blade is no exception. A low eight-tooth count and large gullets are suited to the specific demands of working with fiber cement products. Moreover, polycrystalline diamond (PCD) tips provide extended tooth life, allowing this Marathon blade to last up to 15 times longer than a standard carbuye fiber cement blade.In addition to offering overall precision, the blade's laser-cut body also allows for a stronger tooth bond, which improves durability. This blade can handle cutting up to 9,000 feet of fiber cement before it needs to be replaced, which means less downtime for blade changes. And it can cut up to five stacks of fiber cement at a time.Reduced Dust Production for Improved SafetyThe 12-Inch PCD Fiber Cement Blade's notched design allows it to produce less dust than a similar continuous-rim blade. Coupled with the blade's thin-kerf, eight-tooth configuration and its PCD tips--which also contribute to its reduced dust production--this notched design helps keep your work site cleaner and safer.What's in the BoxIrwin Marathon 4935473 12-Inch Polycrystalline Diamond Fiber Cement Circular Saw Blade.How many weeks did this blade last?