The FTK400 Kit is for contractors and network technicians who install and maintain premises networks with both multimode and singlemode optical fiber. Verify optical loss and power levels at 850nm, 1300nm, 1310nm and 1550nm with SimpliFiber Optical Loss Test Set. Inspect fiber endfaces at 200X power with Fluke Networks' hand held Fiber Viewer optical microscope, and visually locate cable faults, connector problems and polarity issues with VisiFault visual Fault Locator. Product Contains: -------------------------------------------------------------------------------- - SimpliFiber Power Meter, 850, 1300 and 1310, 1550 nm SimpliFiber Sources - VisiFault VFL - FT120 Fiber Viewer - Carrying Case