IVY Classic 36210 Ripcross 8-1/4-Inch 40 Tooth Thin Kerf Carbide Circular Saw Blade with 5/8-Inch Diamond Knockout Arbor, 1/Card Designed for smooth, efficient ripping and crosscutting in plywood, composition board and hard/soft woods, Ripcross (Registered Trademark) Thin kerf blade reduces drag and friction with anti-kickback design ensuring consistent chip removal Alternate top bevel ground C3 modified tungsten carbide teeth Fully hardened blade with a Rockwell Hardness of 40-43 Arbor: 5/8-inch diamond knockout, Kerf: 0.079-inch, Hook: 20-degree