Tenryu PT-18540-T 7-1/4" Carbide Tipped Saw Blade ( 40 Tooth ATB Grind - 5/8"Ko Arbor - 0.063 Kerf) Fully hardened, expertly tensioned tool steel bodies absorb impact, remain flat and true, and resist excess heat build-up. High-grade, C-3, fine-grain tungsten carbide tips resist erosion for extended blade life. Aggressive rake angles for maximum cutting speed and efficiency. Each tip is precision honed on all four exposed surfaces. This minimizes micro-chipping along the sharp edge of the blade and results in a sharper, longer-lasting edge. Thin kerf for less waste and lighter cutting performance (reduced feed pressure).