You are Buying Brand New And Factory Sealed Milwaukee 6 in. 8 TPI TORCH Nitrus Carbide Teeth Metal Cutting SAWZALL Reciprocating Saw Blade Model #48-00-5261 .... with 25% more Nitrus Carbide per tooth and a universal tang, The TORCH SAWZALL blade with NITRUS CARBIDE is designed to cut the thickest metals like cast iron and soil pipe. With the unique carbide, it also outperforms standard carbide teeth blades in common thick metals. 3X longer life in cast iron than standard carbide blades Cuts hard cast iron and soil pipe Cuts faster than all carbide teeth blades today Ability to cut thick metals: stainless steel, black pipe, angle iron 7 TPI design for fast cutting 25% more nitrus carbide per tooth 1/2 in. universal tang....