165mm Specialized Circular Saw Blade with Polycrystalline Diamond Tipped teeth for durability and longer life The Makita B-22997 is a 165mm Circular Saw Blade with a 20mm Bore. It is 1.4mm thick with a kerf of 2.3mm and has 4 diamond-tipped teeth. Designed to be used on a portable saw. Part of a range of PCD (Polycrystalline Diamond) Circular Saw blades designed to cut fibre cement board including \"Hardy board\", \"Marley Weatherboard\" and compressed concrete. One of the fastest-growing environmentally friendly materials in the construction industry. An ultimate blade when it comes to Fibre Cement, outstanding performance results compared to a TCT blade or Diamond Continuous blade. Features: Polycrystalline Diamond Tipped teeth for durability and longer life Smoother, cleaner and more accurate cutting Unbeatable performance in multiple layer cutting Specification: Bore (B): 20 mm Diameter (D): 165 mm Kerf (K): 2.3 mm Rake (R): 10 º Thickness (T): 1.4 mm Tooth Count: 4 Material Type: F.C.B Machine Type: Portable Saw