The IRWIN General Purpose Circular Saw Blade with construction grade tungsten carbide tips that retain their edge for longer. The expansion slots help to dissipate heat and prevent warping. The blade has a fully hardened plate that runs truer for longer and with more accuracy. The precision ground teeth deliver smoother, more accurate cuts. The ATB tooth grind allows for cross-cutting and ripping in all woods. Coated with a corrosion-resistant coating for increased, high quality performance.