Humminbird Dual Helix Starter Kit with HWFG MIThe Humminbird Dual Helix Starter Kit with HWFG MI is a fiberglass boat Ethernet solution that links two HELIX displays for synchronized sonar and data sharing, delivering powerful Dual Spectrum CHIRP imaging with MEGA Imaging compatibility. Two Unit Ethernet Networking: Quick and easy setup to link two HELIX displays for synchronized sonar and data sharing. In Hull Dual Spectrum CHIRP Transducer: XP 9 HW T in hull mount with epoxy mounting included