RJ45 Passthrough Crimper Heavy Duty BlueFeatures: EZ RJ45 through hole crystal head special crimping tool with automatic thread trimming This type of crimping pliers is a special through hole crystal head crimping pliers, which can automatically cut through the excess line of the through hole crystal head. The through hole crystal head is used to make the network cable, and the conduction rate is 100%. And this crimping pliers can also press the ordinary RJ45 crystal head, is a cost