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. Perma-SHIELD® coating protects the blade from heat, gumming, and corrosion 1" Demolition body for straighter cuts with less vibration Ultra hardened cutting edge for up to five times longer life than standard blades A one-of-a-kind tip design that enables faster and easier plunging Compatible with any corded or cordless reciprocating saw