5 Pack, 6" 18 TPI, Bimetal 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 Mild Steel, Under 1/8", Galvanized Pipe, Aluminum Pipe & Channel.