Check the listing for details. D Type RJ45 Coupler, Panel Mount Connector IP65 Waterproof, Pack of 5. Condition: New. Listed at 26.31 USD. What is this?RJ45 D type coupler extender is a choice to extend two network cables to form a longer network cable, which can be used to protect the device interface and extend the life of the device applied for industrial CCTV, factory automation control, stage action, industrial and outdoor in network environments, etc.What will I get?The D-Type RJ45 Coupler, Product name: D-Type RJ45 Coupler; Size:39.2x28x33mm/1.5x1.1x1.3inch;Material: Aluminum alloy; Waterproof: IP65;Connector Type: RJ45; Cable Type: Ethernet; Compatible Devices: Laptop; The package contains: 5 Pack D-Type RJ45 CouplerAre there any advantages of the product?The copper needles use brass solid terminals and the surface is gold-plated. Zinc alloy material, scratch resistance, and superior construction for reliable connectivity of the RJ45 extender.