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 bucklingSAWZALL® blades for the toughest professional applicationsA unique combination of relief angles forms a radius on the back of the tooth that reduces stress build-up during cutting and substantially extends blade lifeA precise manufacturing process creates a sharper cutting edge on each tooth for a faster cutting bladeA thicker more rigid blade body resists fracturing and bending for maximum durabilityMatrix II Bi-metal teeth for greater durabilityMatrix II teeth with 8% cobalt