The 12 Fasern Farbcodiertes ST/PC-LWL-Pigtail-Set OM2 900µm 2m (Part number: 101000500400008) from Opterna is a Glasfaser-Pigtails with a ST /PC connector. Fiber Optic Pigtails are fiber cables that end with a connector at only one side while the other side is used for the splicing to cable. It is used to splice the fiber in the cable, to be connected to other equipment such as patch panels. It is normally used within the wall or rack mounted patch panel. The connector of this pigtail is a ST.