Ubiquiti TC-GND UBNT Ethernet ESD Ground Grounding

These provide a very good ground for your outdoor Ethernet connections.

TOUGHCable TC-GND Connectors: Specifically designed for use with Ubiquiti TOUGHCables and available in 20 in a box, TOUGHCable TC-GND Connectors protect against ESD attacks and Ethernet hardware damage while allowing rapid field deployment without soldering.

• Specifically designed for use with Ubiquiti TOUGHCable
• Eliminates Ethernet ESD failures
• Rapid field deployment without soldering

Also reviewed here.

Purchase here.