Diablo's Bi-Metal Reciprocating Saw Blades for Nail-Embedded Wood are specifically designed for maximum performance in all rough-in applications. These high-performance blades feature bi-metal technology that delivers up to 5X longer life compared to standard blades and a Full Contact Arched Edge Design that delivers faster cuts in fewer passes. Diablo's patented variable tooth technology provides cleaner cuts with less vibration, while Perma-SHIELD® non-stick coating helps protect the blade from heat buildup, resulting in less gumming and corrosion. A unique tip design helps the blade with faster and easier plunging in extreme materials.