Boat Marine DUAL FLOW (BOTH INLETS!) SQUARE MOTOR FLUSHER EARS for Outboards, I/O's, Sterndrives & Outdrives: with Garden Hose Connector Flush Sand, Salt, Sediment, Seaweed and debris from your Outboard or Sterndrive Engine Works on Most Outboards, Sterndrives, I/O's, Outdrives and Lower Units Hooks up to Standard Garden Hose Dual Flow Design allows water through both sides of the water pickup grills of the drive for More effective Motor Flushing Flush after each use for Long Life on Trailerable Boats, High and Drys and Lifts. Can be used for winterization!