The Corning 434401E31AJ003M OptiTap® Single-mode (OS2) Test Jumper SC APC to simplex SC APC features factory-terminated, environmentally sealed and hardened connectors. The 2.9 mm tight-buffered fiber patch cable provides connection to optical power meters for testing. Max attenuation is 0.35 / 0.35 / 0.25 dB/km at 1310 / 1383 / 1550 nm wavelengths. Length is 3 meters (9.84 feet).