- This modular crimping tool makes terminating communications cabling plugs easy. As an all-in-one tool, it lets you easily terminate RJ45, RJ12 and RJ11 plugs with paired-conductor cables for voice and data applications. Trim and strip cords with precision in one motion, for consistent, high quality connections. The tool includes two crimping slots suitable for 6 and 8 position modular plugs. It features a heat-treated carbon steel frame with black oxide finish for superior durability, a safety blade guard, and comfort grip handles that helps reduce fatigue.