Tenryu RS-25540 10" x 40t atb carbide blade Individually hand-hammered, fully heat hardened steel plates for flat, true, wobble-free operation. Aggressive grind angles for easy performance in heavy-duty jobs. Honing carried out at 400 grit to limit microchipping and produce a very keen edge. Large, high-grade carbide tips selected for long life in woodworking applications. Ample side clearance provides for air flow between carbide and workpiece - limits likelihood of burning even on heavy rips. This also prevents premature dulling. Our very popular 40t Rapid-Cut blade for woodworking. Economically priced.