9 Piece Networking Tool Set - Includes network cable tester, ethernet cutting, stripping, and crimping tool, 20 modular plugs, Krone type punch down tool (NOT FOR 110 MODES), along with a dedicated cable stripper, coaxial cable stripper, mini punch down stripper / cutter, #1 phillips & 3mm flat head screwdriver. NETWORKING CABLE TESTER: Tests RJ11 / RJ12 and RJ45, tests double-twisted cables: 1, 2, 3, 4, 5, 6, 7, 8, and G. Judges wrong connections, short circuit, and open circuit. RJ45 ETHERNET CRIMPING TOOL: Build professional quality Ethernet cables using it's built-in cutter, stripper, and crimper. The Cat6 crimping tool supports 8P8C/RJ-45, 6P6C/RJ-12, and 6P4C/RJ11 network cables. A 20 pack of Cat6 RJ45 modular plugs is included. KRONE TYPE PUNCH DOWN TOOL (NOT FOR 110 MODES): Inserts, cuts, and terminates all CW1308 telecoms, CAT3, CAT4, CAT5e, and CAT6 FINGER-LOOP WIRE STRIPPERS / CUTTERS: These simple tools strip and cut a wide variety of network and phone cables.