You are Buying a Brand New And Factory Sealed Milwaukee 9 in. 5 TPI AX Carbide Teeth Demolition Nail-Embedded Wood Cutting SAWZALL Reciprocating Saw Blades (3-Pack) Model # 48-00-5326...... blade tooth has 25% more carbide than leading carbide competitors and feature Nail Guard to rip nails without ripping the teeth. Optimized tooth design ensures the blades deliver extreme life in wood cuting applications.