Pigtail set SC/UPC SM G.657A1 12 pieces 12 colours. This Pigtail from Extralink with a SC/UPC connector is made using a  single-mode G.657A1 fiber, which is dedicated for FTTx technology. This fiber is characterized by  reduced bending radius, without increasing attenuation. This is a very important feature during the construction of FTTx networks due to the large number of changes of optical line direction and because of the small size of cabinets and distribution boxes. Pigtails are used in client cable terminations in the customer's sockets and in end distribution boxes.