The Klein Tools Double-Edged Duct Knife is built for precision and durability, featuring a double-edged stainless steel blade designed for smooth and serrated cuts on flexible duct, duct board, and insulation. Its reinforced steel tang adds strength and stability, while the impact-resistant sheath ensures secure storage and convenient blade removal. With an ambidextrous, dual-material ergonomic handle and sheath belt clip, it offers comfort, control, and portability for demanding tasks. For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn't just the name of our company, it's also our family name. And since we're an American company that's family-owned and family-run, you know you can count on us to be here tomorrow. Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857.