for Humminbird PC11 Power Cable Cord 720057-1 fit HELIX 8/9/10/12/15 800/900/797 Features: 【Fitment】 Fit for all HELIX 8, HELIX 9, HELIX 10, HELIX 12, HELIX 15 Series, 800 Series, 900 Series, 1100 Series products, 797, 798. Replace part number: 720057-1 Power Cable Cord. 【Function】 Used to reduce mutual interference between fish detector devices, minimizing the alternating electric field emitted by the cable and improving the detection capabilities of your fish finder on the water. It is reliable to use in marine environment. 【Easy to Install】 .