The IRWIN General Purpose Saw Blade is made with construction grade tungsten carbide tips to retain their edge for longer and are resharpenable. Expansion slots help to dissipate heat and prevent warping. The blades have a fully hardened plate which 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.