RealVision 3D Transducer Extension Cable - 8M (26&';)RealVision 3D Transducer Extension Cables work with the transom-mounted RV-100 and through-hull RV-200 and RV-300 series transducers. Each extension cable features a waterproof, twist-lock connector at the MFD end, and a compatible socket at the transducer end. For best performance, Raymarine recommends using no more than two (2) extension cables in any cable run. Specifications: Type: Extension Box Dimensions: 2"H x 10"W x 10"L WT: 2.4 lbs UPC: 723193817094