Klein Tools multi-bit punchdown screwdriver / nut driver gives you the convenience of manually punching down wall jacks and patch panels. With its machined tool steel for greater strength, this product comes with multi-bits to make your job easier. Shaft holds 4 universal tips and converts to 2 nut driver sizes and 1 hex driver. Great for use on 110 terminal/patch panel and 66 patch panels. 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 isnt just the name of our company, its also our family name. And since were an American company thats family-owned and family-run, you know you can count on us to be here tomorrow. Klein Tools doesnt just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857.