The fiber jumper is used to make jump lines from the device to the fiber optic cabling link, with a thicker protective layer, typically used for links between the photo-breaker and the terminal box.High-end quality, in line with international quality testing standards.Insert loss is low, return loss is large, the use of ceramic ferrule, the quality is more assured.Threaded with PVC made of materials, the use of A-class bare fiber material, more secure and durable.Grinding technology advanced, strong to ensure that the optical fiber grinding offset fiber surface, no scratches flaws.