The Milwaukee® Torch With Nitrus Carbide™ Blade Is The Fastest Cutting and Longest Life Blade In Cast Iron and Thick Metals. Milwaukee Nitrus Carbide™ Technology Dissipates Heat Better and Delivers 5X The Life Of Existing Carbide Teeth Reciprocating Saw Blades, Greatly Improving User Productivity When Cutting Through Cast Iron. This Blade Features A New 8TPI Design, Allowing For The Fastest, Smoothest Cuts In All Thick Metals. With Larger Gullets Than Competitive Carbide Blades, The Torch With Nitrus Carbi