5 Pack, 12", 14 TPI, Torch Sawzall, Reciprocating Saw Blade, Metal Cutting Blade With The Double Duty Upgrade, Feature A Tooth Form Optimized For The Longest Life & Maximum Durability, Tough Neck Engineered To Protect Against Tang Breakage, Grid Iron Features A Stamped Honeycomb Pattern Throughout The Body Of The Blade That Greatly Increases The Rigidity Of The Blade, Ideal For Making Tough, Straight Cuts.