6" 18 TPI, Bimetal Reciprocating Saw Blade, Tough Flexible Body Resists Breaking, 3 Degree Shank For Fast Efficient Cutting, +5 Degree Hook Angle For Fast Cuts Through The Toughest Materials, Matrix II Steel With 8% Cobalt For Maximum Durability, For Cutting Mild Steel, Under 1/8", Galvanized Pipe, Aluminum Pipe & Channel.