*** (This item sold as a pack of 10) *** Super thin laser cut kerf (small diameter blades only) provides faster, cleaner, more exacting cuts. Perma Shield coating shields blade against heat, gumming, and corrosion. Durable micrograin titanium carbide tipped teeth are impact resistant to hold their edge longer. Laser cut stabilizer vents trap noise and vibration and stabilize blade. Laser cut heat expansion slots reduce heat and blade warp. Tri metal shock resistant brazing for stronger carbide teeth.