Lower Insertion Loss--Good Low Back Reflection & High Return Loss, This fiber optic pigtail Each insert performance is formance higher than standard requirements in the industry, good temperature stability.Set of Accessories is Complete and The Optical Fiber Couplers is Configured and Fiber Pigtail cables are inserted neatly. Fits 19" Racks Mount Cabinets--Widely Used Perfect for Data Centers, premise installations, Optical Fiber LAN, WAN, Telecommunication and Data Processing Networks standard 100% optical test so as to ensure the reliability. Secure Way to Manage Fiber Terminations and Splices--2Pcs Splice Trays Spool - The protective outer jacket is removable, for tighter bend radius requirements or high density installations.