DEWALT DW3161 Series 20 6-1/2-Inch 18 Tooth ATB Thin Kerf Saw Blade with 5/8-Inch Arbor Tougher tungsten carbide stays sharper longer Specially formulated anti-stick coating minimizes friction and gum-up for smoother cuts Ribbed heat vents allow blade to run cooler, reducing unwanted flexing and binding Thin kerf for fast and smooth cutting action All blades feature 5/8-inch arbor with diamond knock-out 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;