This kit features a quality RJ45 crimp Tool , and a battery-operated cable tester. Crimper Features: Crimps the following types of modular plugs: RJ45/8P8C, 8P6C, 8P4C, 8P2C Padded steel handles and steel crimp hammer Built-in cutter Built-in cable stripper SK5 blade Tester Features: Tests RJ-45 network cables and RJ11 cables Check up to four pairs of conductors for continuity and correct polarity Zippered vinyl protective pouch included Power: One (1) 9v Battery - NOT included Package Includes: RJ-45 Crimp Tool RJ-45/RJ11 Tester