1. Choose appropriate groove according to the diameter of the cable to be slit
2. Put the cable into the groove, pay attention to the blade's position on the cable with the length to be slit in mind
3. Close the slitter and hold it firmly with one hand, then pull the cable out with the other hand
4. Check the processed segment of the cable, there should be two rips on the jacket which completely separate the jacket into
two halves.