Klein's patented universal sleeve technology connectors install up to 2x faster than other compression connectors. Patented viewing windows in sleeve aid in proper seating. One connector fits all diameter variations within a cable series. This patented sleeve design provides the excellent holding power and signal strength you demand. Fits most major brands of RG59 cable. Fits difficult to work with multi-shield and plenum cables. Solid brass construction with dark nickel plating. Also available in a pack of 50 (Cat. No. VDV812-618). 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.