6", 18 TPI, Torch Reciprocating Saw Blade, Metal Cutting Blade With The Double Duty Upgrade Feature A Tooth Form Optimized For The Longest Life & Maximum Durability, Tough Neck Is 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, Bulk.