Product Description The Klein Tools Bell System Type Wrench is similar to a standard lineman's wrench, but it's designed for telecom and datacom work applications. Its openings are sized to NEMA hardware specifications. It's also forged and heat-treated for long life. 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. From the Manufacturer Klein 3146B Bell System Type Wrench. The Klein 3146B Bell System Type Wrench is similar to standard lineman's wrench, but with end openings sized to NEMA hardware specifications. The Klein 3146B Bell System Type Wrench has a silver painted finish. The Klein 3146B Bell System Type Wrench is 13-Inch long. The Klein 3146B Bell System Type Wrench has a large end that has 1-1/16-Inch and 1-3/16-Inch openings and a small end that has 11/16-Inch and 7/8-Inch openings.