DEWALT DW3571 7-1/4 16T Carbide Thin Kerf Circular Saw Blade Tougher tungsten carbide stays sharper longer Specially formulated anti-stick coating minimizes friction and gum-up for smoother cuts Thin kerf for fast and smooth cutting action Ribbed heat vents allow blade to run cooler, reducing blade flexing and binding All blades feature 5/8-inch arbor with diamond knock-out;