Dirty fiber optic endfaces are the major cause of problems in singlemode and multimode fiber optic systems. The Fluke Networks FTK1475 FI-500 FiberInspector Micro with SimpliFiber Pro Multimode & Singlemode PMLS, VisiFault, 2 FindFibers, Cleaning kit (NFC-KIT-BOX) and 1.25 mm swabs removes the hassle associated with inspecting fiber end faces, especially in low light and high cable density situations. It is very simple to use: Simply plug the cable into the FI-500 and touch the AF button. Within seconds, the fiber endface comes into sharp, clear view. And if you're working in a difficult to reach place or you can't get the image to stand still, just touch the pause button to freeze the image.