This was part of an Amazon liquidation pallet. Open box item, still shrink wrapped on the spool.
For reference, a scan of the label on Amazon gives the following info-
Brand BangunConnector Type Uniboot Lc Upc to Lc Upc DuplexCable Type Fiber OpticCompatible Devices Fiber Media Converters, Fiber Optics Patch Panel, Router, Server, TV cameraSpecial Feature This OS2 fiber patch cable is ideal for connecting 1G/10G/25G/40G/100G/400G Ethernet connections
About this item

• Low Friction LC/PC-LC/PC singlemode duplex fiber optic patch cable: Bangun OS2 fiber patch cable body is made of Ultra Low Friction flame retardant LSZH jacket (Coefficient of Friction μ<0.2). Low Friction Cables are the ideal solution for wiring premises. The stiffness allows the cable to be installed by pushing as well as by the more conventional pulling method. These cables can even be used in congested conduits.
• Armored Fiber Optic Cable can be used outdoor: This LC fiber jumper cable built-in a stainless steel tube inside to protect the inner core(fiber glass) from damage like pet chew. it remains all the features of a standard patch cord, but is much stronger. Pressure resist, Wear resist and Heat Resist.
• LC Uniboot Connectors - Space-saving: LC duplex connector with uniboot is two LC connectors encased in a common housing with one boot, terminated on a single twin-fiber round cable. By using cable assemblies with LC Uniboot connectors, half of the space can be saved over traditional duplex cable. Uniboot single jacket patch cables make patch panel cable management becames considerably easier. Ideal for high-density cabling application.
• Come with Fiber Optic Cable Pulling Eye to help you pull fiber cable through conduit.
• WIDELY USED: This outdoor LC LC Fiber Optic Patch Cable is compatible with all standard fibre optic equipment and connectors, commonly used in passive applications (GPON, FTTX and LANs) . LC LC SM fiber Cable is suitable for Storage Area Network and Data Networks and Connects to SFP Transceivers, Ethernet Switches and Media Converters, compatible with 10GBASE-L (1310 nm), 10GBASE-E (1550 nm), 1000BASE-LX (1300 nm) and Asynchronous Transfer Mode (ATM) applications.

OS2 9/125 Single Mode LC Duplex Armored Fiber Optic Type LC to LC (Uniboot Connectors)

Polish Type UPC to UPC

Fiber Mode OS2 9/125μm

Fiber Count Duplex

Fiber Grade G.657.A2 (Compatible with G.652.D)

Jacket Color Black

Cable Diameter 3.0mm

Cable Jacket LSZH with low-friction characteristic

Min. Bend Radius (Fiber Core) 7.5mm

Min. Bend Radius (Fiber Cable) 20/10D (Dynamic/Static)

Fiber Cords Structure Armored, Stainless Steel Tube

Tensile Load 200/600N (Long/Short Term)

Insertion Loss ≤0.15dB

Return Loss ≥55dB

Operating Temperature -20~75°C

Storage Temperature -20~75°C