Irwin Weldtec Cordless Circular Saw Blade with welded carbide teeth for a substantially stronger tooth bond and longer life The ultra compact carbide is 70 tougher than standard carbide for superior sharpness and cut quality The blades have innovative heat vents and the fully hardened plate runs truer for longer and with more accuracy They have alternate top bevel teeth ATB for cross cutting and ripping in all woods Suitable for use with handheld corded machines