The ductwork SAWZALL blade has been engineered to specifically address the unique frustrations encountered when installing ductwork take-offs. The ductwork SAWZALL blade completely eliminates the need to carry multiple tools, lightening up your tool belt and greatly speeding up the installation process. Engineered with a pierce point tip, the ductwork blade plunges into sheet metal with ease and the tapered profile design allows the blade to make both radius and square cuts, accommodating any type of take-off installation.