Klein Tools 1656 Series Chicago Grips have a round, smooth inside jaw contour making it perfect for work with stranded copper cables. These smooth jaws grip with maximum contact and are less likely to cause cable deformation. This grip also has a hot-line latch designed for placing a grip on a cable with a hot-line stick. The three notches in the hot-line latch adjust the balance of the grip to better match the direction of the cable sag. Grips are rigorously tested and pulled to rated load to ensure the highest quality and reliability. Round inside jaw contour safely holds 0.96 in bare cables. Drop forged steel construction withstands 8000-Pound of load. Hot-line grip firmly holds bare/insulated conductors. When springs or lock-open features are desired, add prefix letter ''S'' before catalog number (example: S1684-5H). 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.