Installs easily in seconds with an ordinary garden hose. No tools required. Lengthens engine life by flushing out salt sand and corrosive chemicals in minutes. Features: Dual flow provides water to lower unitQuick-flushing unitFits standard outboards & I/Os w/ side inlet ventNo tools required Fits standard outboards & I/Os w/ side inlet vent No tools required | Seasense Dual Flow Pro Motor Flusher in Sand