... technology,End of scars, no dirt echo without loss Fiber Optic patch cord1.FeaturesCompliance with the Standard of IEC and YD ... Pigtail Cable,Bunchy Pigtail Cable,Waterproof Pigtail CableMultiple option of Optic Cable CoreSimplex, Twin cores, 4 Cores, 6 Cores, 8 Cores ... Usage ≥1000 TimesOperating Temperature Range -40°C ~ +80°C Fiber Optic patch cord