[Crimp Network Tool Kit]: Includes 3 in 1 RJ45 crimping pliers,1PCS Network cable tester, 2 PCS Wire stripping knife,1PCS punch-down tool, 1 * Cross Screwdriver, 1 * Slotted Screwdriver, 1 * Component Box With 10 pieces Crystal RJ45 Connector [High Efficiency]:Network Installation Tool Kit is designed to allow professionals and amateurs alike to efficiently manage all aspects of network installation. With this tool kit, users can now quickly and conveniently install computer and network adapters as well as repair network cables and test networks [Multifunction RJ45 Crimping Tool]:RJ45 crimping pliers is used for Ethernet (CAT7, CAT6, CAT5 / 5e) and telephone cables Cutting, Stripping and Crimping. Compatible with all RJ45 & EZ Pass-through RJ45 CAT6 shielded & un-shielded connectors, RJ45 CAT5E connectors, and RJ11/12 connectors (excluding AMP) [Network Cable Tester]: Judges wrong connection, short circuit and open circuit. Auto scanning function for rapid testing etc..