FeaturesOptimized tooth design providing 2X more life than our previous generation SAWZALL® blades Tough Neck™ ribs strengthen the blade tang and minimize breakage Grid Iron™ honeycomb pattern increases blade rigidity to resist blade bucklingTough Neck™ ribs strengthen the blade tang and minimize breakageDouble relief angle reduces tooth stress for long lifePrecision forming process creates sharper teeth for fast cuttingMatrix II teeth with 8% cobalt