supply free sample first Available Outer Diameter: 2.0mm,3 .0mm, 5.5mm, 8.6mm.14mm.17.3mm, 21.0mm 1. Smaller attenuation (Less than 0.35db/m)2. Excellent toughness and flexibility, a smaller bending radii isallowed, Under normal circumstance of processing, installation, side pointmaking and other application, the bare fiber is very hard to break3. Good heat resistant4. Good anti-aging property, ...