The network tool kit is designed to allow professionals and amateurs alike to efficiently manage all aspects of network installation. Ethernet tool kit is made of professional-grade heavy-duty steel so it delivers exceptional torque without bending. Armed with this RJ45 crimping tool kit, users can now quickly and conveniently install computer and network adapters as well as repair network cables and test networks. How to Make a RJ45 Ethernet Cable Connector: 1: Put the cable into the stripping port of the rj45 ethernet crimper. 2: Hold the rj45 ethernet crimping tool and rotate the cable on 360 degrees to strip the cable. (Note: Don't crimp too much tightly to avoid damaging the internal cable). 3 and 4: You will see eight colors (1-8) wires with copper core after stripping the outer cover of the cable. Then you need to line up the eight colors of the cable according to T568B standard: Orange White, Orange, Green White, Blue, Blue White, Green, Brown White, Brown. 5: After line up the eight colors of the cable, you should cut the wires neatly through the cutting port blade of the rj45 ethernet crimper. 6: Please insert the sequential cable into the end of the crystal connector. When inserting the cable into the crystal connector, hold the cable tightly to avoid the wrong sequence. 7 and 8:Insert the network cable with crystal connector into the 8P crimping port. Squeeze the handle hard and release then, pull out the crystal connector 2 Network plier &Component Box With 10 pieces Crystal Head NS-468 Master Cable Tester(battery not included,require 1 piece 9V 6F22 battery)&NS-468 Remote Cable Tester Punch Down Impact Tool 3 Stripping Knife Stripping Knife Cross Screwdriver&Slotted Screwdriver