The Diablo Bi-metal Reciprocating Saw Blade has been engineered with superior cutting performance in mind. Its Perma-SHIELD coating effectively shields the blade from heat, gumming, and corrosion. The patented aggressor variable tooth technology ensures a high tooth count per inch (TPI), increasing significantly from the shank to the tip of the blade. This design allows for extremely fast cuts and reduces vibration. Compared to standard bi-metal blades, it boasts up to 5 times longer cutting life. Additionally, the unique plunge tip design enables easier and faster plunging, while the aggressor variable tooth technology minimizes vibration and offers up to 2 times longer lifespan. It is the perfect choice for flush cutting and tackling nail-embedded wood and medium metal (3/23 in. - 5/16 in. T ness) applications.