Lightning Arrester RJ45 Adapter Ethernet Surge Protector Network Protection Device Condition: 100% brand new and high quality Quantity: 10 pieces per batch Specifications: Please install the surge protector within 1 meter of the protected device. The closer the better Prevent routers and other connected devices from being struck by lightning Prevent laptops from being struck by lightning Comes with 8 lightning arresters to protect your Ethernet devices from damage by lightning and surges. Easy to install. Install between Ethernet and protected devices Connector: RJ45 female Material: Shielded aluminum alloy Size: (L*W*H) 4.50*2.60*2.50cm/1.77*1.02*0.98 Note: The size is measured manually, there may be an error of 0 to 2 mm, which is normal. And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you