Milwaukee THE TORCH with Nitrus Carbide 9 In. 7 tpi Cast Iron Reciprocating Saw Blade with Carbide Teeth3X longer life in cast iron than standard carbide blades Cuts hard cast iron and soil pipe Cuts faster than standard carbide teeth blades Ability to cut thick metals: stainless steel, black pipe, angle iron 7 tpi design for fast starts and smooth cuts 25% more NITRUS CARBIDE per tooth 1 2 In. universal tang