Core Material : Polymethyl-Methacrylate Resin Cladding Material: Fluorinated Polymer Core Refractive Index: 1.49 Refractive Index Profile: Step Index Numerical Aperture: 0.5 Core Diameter: 37.5μm Number of cores : 151 Fiber Diameter: 500μm Jacket Material: Polyethylene Jacket Color: Black Jacket Diameter: 1.00mm Approximate Weight: 0.8 g/m Transmission Loss(650nmCollimated Lisht): 650 dB/km