Through-Hull Wiring Kit For Kayaks From Wilderness Systems Modern kayaks are often outfitted with electronics that yield unruly wires. Now you can take control of the clutter with the through-hull wiring kit, providing you everything you need to easily route wires from a battery or other electronics from a hatch or pod through your kayak's hull. Water resistant fittings prevent flooding. Reduces clutter by allowing you to hide cables inside your hull Prevents snagging and tripping 2 water resistant fittings with 6 different fitting sizes from 1/8 inch to 5/16 inch Compatible with Lithium battery, most other batteries, and fish Finder install kit Require 1-3/8 inch hole for installation, handles hulls up to 1/2 inch thick. Designed for a water resistant fit on cables up to 5/16 inch.