Feature:1. Compatibility: Compatible for Garmin: for Striker 4, for Striker Plus 4, for Striker Vivid 4cv, for Striker Plus 4cv, for ECHOMAP Plus 43cv, for ECHOMP Plus 44cv. Other fish finders and GPS charters, compatible for Lowrance: for Elite 3x, for Elite 4, for Elite 4x, for Elite 5, for Elite 5x, for Hook Reveal 5, for Hook 2, for Hook 4, for Hook 5. Other fish finders and GPS chart makers, compatible for Humminbird: for Helix 5, other fish finders and GPS.2. High Grade Materials: Made from high performance composite materials for durability and reliability in the most demanding Marine environments.3. Professional Performance: Complete flat surface and down drilled installation solutions maintain the installed structure in harsh waters.4. Easy Installation: Designed for kayakers and paddle anglers who need an easy way to install a fish finder screen and radar at the same time.5. Full Range Motion: The 1.5 inch spherical design provides greater clamping force for larger attachments while also enabling smooth full range motion. There are a few screw hole patterns to choose from to suit a variety of fish detectors.Specification:Item Type: Fish Finder Base KitWeight: 706g/24.9ozProduct Material: Nylon and stainless steelPurpose: Kayak DIY, fish finder and other accessories installation fixed.Package List:1 x T Screw 1 x Cross Short Screws 8 x Long Cross Screws 1 x Rubber Washer 1 x Support Base 1 x Extended Rod 1 x Adjusting Rod 1 x Device Adapter