Diablo D0740A 7-1/4" 40T Diablo Finish Work Circular Saw Blade Laser cut stabilizer vents trap noise and vibration keeping it cool and reducing blade warp Laser cut heat expansion slots allow blade to expand due to heat build-up keeping the cut true and straight Durable micrograin titanium carbide for extreme durability, razor-sharp cuts, and long life Tri-metal shock resistant brazing allows carbide tips to withstand extreme impact for maximum durability Laser cut arbor for accurate blade rotation reducing vibration and premature wear