The Fluke Networks OFP-Q-ADD is an Singlemode Test Ref Cord Kit (2m) for testing LC terminated. This item should be ordered when you need an OptiFiber Pro Quad (SingleMode and MultiMode) OTDR add-on kit with module and accessories, WITHOUT a mainframe. The Fluke Networks Versiv family of cable testers offer modular solutions for every copper and fiber cable testing application. Check out our OptiFiber Pro product page to view all of your ordering options.