Humminbird's gimbal mount is designed for use with all models in the Helix 9/10 series of fishfinders/chartplotters. This replacement mounting bracket includes all necessary attachment screws and knobs. Constructed for long-term use in a marine environment. Includes attachment screws & knobs Marine-grade, durable construction | Humminbird GM H910 Gimbal Mount For Helix 9/10 Series