Designed for the contractors, these blades are the perfect choice combining smooth performance at affordable price. These tools feature a heavy duty steel plate and a thin kerf for faster and precise cuts. Also, the cutting edges are made of constructional carbide for longer cutting life and extended lifetime. You will notice the expansion slots in the blade bodes which prevent the tools from warping during rotation and reduce vibrations! Use them for framing/decking and general construction. To be used on portable and cordless circular saws.