The BRIS hand operated outboard is a hand operated propeller designed to push small watercraft in both forwards AND! reverse! it is suitable for any small craft up to 4.50 metres long such as a tender, dinghy, inflatable or tinnie. It is aimed at boaters who want a simple, environmentally-friendly propulsion system which requires no fuel, no charging and produces no pollutants. It is ingenious in its design, yet is very practical and easy to use. It has a unique 3:1 gear ration which makes it simple and easy to propel in either a forward or reverse direction with just the turn of a handle. No noise, no costs and no pollution . You can watch the video on Youtube to see how easy the BRIS hand outboard works https://offerup.com/redirect/?o=aHR0cHM6Ly95b3V0dS5iZS9SZ005UzJLSGM3UQ==