Dura-Blade 110/66 Cut Combination Punchdown Blade is designed for durability and performance. One blade terminates and cuts on both 110 and 66 panels. Compatible with most twist and lock style punchdown tools. Made using MIM technology and has precise cutting edge. 2-13/64-Inch blade features dual 110 and 66 cut and terminate ends. Suitable for use with bayonet style socket punchdown tools. See our Cushion-Grip Impact Punchdown Tool Kit (VDV427-822) for everything required to install and maintain 110 and 66 panels, cross-connect systems and wall jacks. 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.