8" 14 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 In Heavy Gauge Metal, Hard Rubber, Fiberglass & Angle Iron.