The innovative new design is made of composite material and unlike traditional trim systems no hydraulics are involved, it is pure electrical. This makes it easy to install. It is virtually corrosion free and will not cause any galvanic corrosion, virtually no maintenance is required. 12V or 24V. Features push button control panel with LEDs for precise trim indication. Automatic retraction. Suitable for several helm stations and for multiple installations. Designed for speeds up to 50 knots. The Trim System is designed to fully replace conventional trim tabs. 3841717: 2 Cables 8.2 ft. (2.5m), 1 Cable 16.4 ft. (5m) 3841716: 2 Cables 13 ft. (4m), 1 Cable 29.5 ft. (9m).