High-accuracy 1550nm single-mode 10G SFP+ module for length and dB loss testing, single-mode LC duplex loopback plug, single-mode SC duplex loopback plug, 2m LC-LC SM duplex patch cord, 2m LC-SC SM duplex patch cord. Protect your investment with SignalTEK QT accessories – ensuring accurate results, maximum performance, and long-term reliability on every job.