... 0,3.0MM 4.1,2,4,6,12 Cores,ect Offer FCC,CE,ROHS,ISO9001 6 core ... , 000 timesFormulate for customer:1.Diameter:0.9 , 2.0 , 3.0 mm , etc2.Type: Single - Mode ... ( 9/125 um ) , Multi - Mode ( 50/125 um , 62.5 / 125 um , )3.Specification: single core , dual - core ... , the 4 core , 6 cores , 12 core . . . etc(according to your ...