This is a replacement or second station Tilt, Swivel, quick disconnedt mount system for use with the 700 Series Ethernet compatible Fishfinders

The HDB91X is the most powerful Xtreme Signal antenna. This Yagi style antennas is renowned for its high-gain design, directional reception, and its ability to block interference; making it ultimate choice for low-signal areas, or for those who simply want the best.