5 Pack, 8" 10/14 TPI, Bi-Metal Reciprocating Saw Blade, Reinforced Teeth For Increased Durability, Anti-Stick Coating Reduces Friction, Matrix II Steel With 8% Cobalt For Maximum Durability, Raker Teeth Minimizes Vibration, +5 Degree Hook Angle For Fast Cuts Through The Toughest Materials, & Tough Flexible Body Resists Breaking, For Cutting Wood, Including Nail Embedded Wood, Composition, Cast Aluminum, Plastics, Light Gauge Non-Ferrous Metals & Fiberglass.