The IRWIN WeldTec Circular Saw Blade, Framing and Ripping, is made stronger to last longer. This ultra-thin kerf blade features patented WeldTec technology with carbide teeth that are welded not brazed and delivers the fastest cutting speed and increased durability when compared to previous IRWIN blades. Constructed with a heat-resistant, non-stick coating to reduce binding and gumming, these blades have laser-cut expansion slots to reduce warping and are ring tensioned to maintain balance.