C&E Crimp Tool for RJ11 / RJ12 / RJ45 Network and Phone (CNE43989) Crimping Tool for RJ11 / RJ12 / RJ45 This device is used to crimp RJ11 / RJ12 phone connectors and RJ45 Ethernet connectors onto cables Works with items: Cat5 RJ45, Cat5e RJ45, Shielded Cat5e RJ45, Cat6 RJ45, Phone/Data RJ11 and Phone/Data RJ12 Crimp Connectors RJ11 /RJ12 /RJ45 Crimp Tool, Red ROHS complaint