The Irwin General Purpose Table & Mitre Saw Blade with construction grade tungsten carbide tips that retain their edge for longer and are resharpenable. Expansion slots help to dissipate heat and prevent warping. The blades have a fully hardened plate that runs truer for longer and with more accuracy. They have an alternate top bevel (ATB) tooth grind for cross-cutting and ripping in all woods. Coated with a corrosion-resistant coating for increased, high quality performance. This Irwin General Purpose Table & Mitre Saw Blade has the following specifications: Blade Diameter: 216mm. Bore: 30mm. Teeth: 48. Kerf Thickness: 2.5mm. Tooth Config: ATB. Machine: Table & Mitre. IRW1897209