FeaturesIncludes a variety of wood, metal, and multi-material cutting SAWZALL® blades to tackle a broad range of professional applicationsWood cutting blades feature nail guard which combines an aggressive 5 TPI pattern for faster cutting, with a unique design that protects against tooth fracturesFang Tip™ design on wood cutting blades bites into wood on first contact for faster plungingMetal cutting blades with the double duty upgrade feature an optimized tooth design providing 2X more life than our previous generation