Klein's HVAC impact rated multi-tool brings a new-to-world design to a classic 11-in-1 screwdriver / nut driver. Each component is compatible with an impact driver, as well as the included screwdriver handle, eliminating the need to carry separate power tool accessories. The tool houses 7 popular tips, converts to 4 nut driver sizes and includes Schrader bits. It's the familiar feel of a multi-bit screwdriver / nut driver, with the added benefit of power tool compatibility. 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.