The Milwaukee® 12 in 7 TPI The Torch™ with Nitrus Carbide™ Sawzall® blade 5 pack for cast iron and other thick metals is the next generation of carbide teeth technology. This Sawzall® blade with Nitrus Carbide™ teeth cuts longer, cuts more and cuts faster than traditional carbide teeth products on the market. Milwaukee® Nitrus Carbide™ technology eliminates the tradeoff between blade life and speed of cut compared to traditional carbide teeth blades. The blade delivers 3X the life of existing carbide reciprocating saw blades to continuously make the toughest cast iron removals on the job. The Torch™ Sawzall® blade with Nitrus Carbide™ cuts the thickest metals like cast iron and soil pipe. The unique carbide blend outperforms standard carbide teeth blades in common thick metals. Milwaukee® 48-00-5563 Torch™ Reciprocating Saw Blade, 12 in L, 7