Pigtail is a short fiber optic cable factory terminated with an SC or LC (or other) connector on only one side. Pigtails are used in internal wiring. Most often, the length of the pigtails is from one to five meters. Pigtails have distinguishing colors of external coatings. It is customary for SM pigtails to have yellow coatings and MM pigtails to be pink. The intersection of the patchcord allows you to get two pigtails.