PROFESSIONAL RJ45 CRIMPING TOOL: Ethernet crimping tool kit includes pass throuh rj45 crimper, network cable tester(9V battery not included), 50PCS Pass Through Cat6 connectors, 50PCS cover boots, wire stripper, a set of spares blades, providing everything you need for ethernet cable termination and testing, even if you're a beginner, you can tackle your home network installation like a pro and get the job done with ease. ALL-IN-ONE ETHERNET CRIMPER: Crimps, strips, and cuts STP/UTP paired-conductor data cables; Crimp 4, 6, and 8 position modular connectors(RJ11/RJ12 standard and RJ45 Pass Through) All-in-one Ethernet Crimper - Crimps, strips, and cuts STP/UTP paired-conductor data cables; Crimp 4, 6, and 8 position modular connectors(RJ11/RJ12 standard and RJ45 Pass Through), ideal for Cat5, Cat5e, Cat6, and Cat6a ethernet cables. EASY TO USE AND DURABILITY: Ethernet crimping tool pass through technology significantly reduces prep work time, and cuts the excess wires flush and crimps all in one simple motion. Crafted from heavy-duty steel can withstand repeated use and provide precise crimping. VERSATILE CABLE TESTING: Nework cable Tester that can quickly verify the integrity of ethernet(PoE), and telephone cables, making it suitable for various network installation and troubleshooting tasks. WIRING DIAGRAM: A built-in wire guide helps ensure the wires are properly aligned before crimping, reducing errors. Our Worry-Free 18-Month Warranty and Toll-Free Tech Support, and friendly customer service 7/24