Product Description WeldTec Circular Saw Blades -- Made Stronger, Lasts Longer. The New IRWIN WeldTec platform combines various attributes to deliver long lasting performance. View larger View larger About WeldTec: WeldTec on circular saw blades is the welding of teeth to the blade as opposed to the traditional brazing teeth. This is ideal for handheld corded and cordless blades as the weld provides a strong bond in case of unexpected nail strikes or foreign objects embedded in wood. IRWIN Circular Saw Blades: Other sizes of IRWIN circular saw blades are available for cordless, corded and stationary circular saw machines. See our new IRWIN MARPLES range of PTFE coated circular saw blades for mitre and table sawing. IRWIN Tools: IRWIN Tools has a long and storied history, stretching for more than a century and set against the backdrop of a young, ambitious nation. In 1885, Charles Irwin patented the Auger bit and, along with four business partners, formed the IRWIN Auger Bit Company. In 1924, William Petersen, a Danish immigrant, invented and patented VISE-GRIP locking pliers. Through innovation and a series of acquisitions, these two companies have now become IRWIN Tools. IRWIN Tools manufactures and distributes a broad line of hand tools and power tool accessories including JACK handsaws, RECORD clamping and locking tools, VISE-GRIP pliers and wrenches, JORAN drill bits, QUICK-GRIP clamping tools, MARPLES chisels and woodworking tools, and UNIBIT drill bits. Innovation: Innovation is the hallmark of IRWIN. For more than 100 years, it's been an idea that has permeated the culture of our company and it continues to drive everything we do. Beginning in 1885 with development of the first IRWIN Auger bit, and progressing with the introduction of Vise-Grip locking tools, Blue Groove flat bits, and Quick-Grip bar clamps, IRWIN has been at the forefront of the industry, creating better tools in a better way. Our impressive track record of new product development is born from our passion for understanding the needs of our primary user -- the professional tradesman. This dedication to improving products begins in the field, where IRWIN's specialised end-user teams visit construction sites. There, the IRWIN Field Product Specialist team learns first-hand -- from the professional -- how to improve our products and how to make the pro's job easier and more productive. This hard-earned knowledge is the foundation for a unique product development process utilised by IRWIN's engineering, marketing and manufacturing teams to deliver a continuous stream of new products to the marketplace. Supported by a global network of world-class manufacturing facilities and bolstered by our partnerships with leading global retailers, IRWIN continuously sets the professional standard in each and every market segment in which we compete. From product feedback and development to distribution and use in the field, we dedicate ourselves to delivering quality tools that meet the stringent requirements of our toughest critics -- professional tradesmen. View larger Features and Benefits: Welded carbide teeth 30 percent stronger tooth bond for 50 percent longer life. Ultra-compact carbide -- 70 percent tougher than standard carbide for superior sharpness and cut quality. Fully hardened plate runs truer with more accuracy for longer life and durability. Innovative heat vents. Set Contains: 1 x IRWIN IRW1897386 Weldtec Circular Saw Blade 210mm x 40T