DEWALT DW3191 Series 20 7-1/4-Inch 18 Tooth Nail Cutting Saw Blade with 5/8-Inch and Diamond Knockout Arbor The product is 7-1/4" 18T Circle Blade Easy to use The product is manufactured in China Rock Carbide Teeth provide maximum resistance for longer life Flush ground teeth and reinforced shoulder for enhanced durability Anti-stick rim reduces friction and gum-up Blades feature 5/8-inch arbor with diamond knock-out