10 Ft. Fiber Optic ST to SC Duplex Patch Cable (13-ahm107-3m). Specs: 13 = Duplex Patch Cord; A = ST Connector type (A1=.04dB, A2=.02dB Insertion Loss); H = SC Duplex Type Connector type (B1= .06dB, B2=.13dB Insertion Loss); M1 = Multimode, PC Polish Grade; 07 = Multimode 62.5 / 125 um 3.0 * 6.0mm zipcord Cable Type; 3M = 3 Meter Length.