Aohan is a proessional manufacturer of fiber optical connector products with good quality low price. SC.ST,LC,E2000, MTRJ. FEATURE: Low insertion loss and return loss Free-floating ceramic ferrule UL-rated plastic housing and boot Boots in a variety of colors High precision alignmentSPECIFICATIONS: Insertion Loss: Single mode l≤0.20dB & Multimode ≤0.25dB Return Loss: PC ≥50 dB, UPC ≥55 dB & APC ≥65 dB Durability <0.20 dB typical change, 1000 mating Operating Temperature: -40 to + 80 Ferrule Hole Sizes: Single mode: 125.0+1/-0μm, Concentricity: ≤1.0μm, 125.5+1/-0μm, Concentricity: ≤1.0μm, 126.0+1/-0μm, Concentricity: ≤1.0μm Multi mode: 125μm, Concentricity: 1≤3μm or 127μm, Concentricity: 1≤3μm or 128μm, Concentricity: 1≤3μm