E-Fin, SUP Fin electric - Motorized SUP fin, to power your SUP. The Dolsey motorized "E-FiN" is an electric fin that converts a non powered Paddle board to powered. Paddle power assisted to help paddling against strong currents, tides, and wind. Power booster for the weak and lazy paddler, Dolsey SUP powering kit is must for fishing, paddle assist, touring.... The E-FiN electric SUP conversion kit, is for consumers,and lesson providers The "E-FiN" fits any standard RIGID SUP or surfboard center fin box, WILL NOT FIT an inflatable SUP S The "E-FiN" battery will power our motorized fin 3 to 6 hours, at 1 to 5 mph on a fully charged battery. Kit includes a 10" motorized FIn, remote control, battery and battery charger.