The dual flow motor flusher helps properly maintain your boat's engine flushing out contaminates. It allows you to run fresh through your engine's cooling system. Simply connect the flusher to a standard garden hose to clear out salt and mineral build-up that could jeopardize your engine's ability to operate to its fullest capacity. It allows you to run fresh through your engine's cooling system. The flusher's dual input design allows enhanced flow through the engine. Fine craftsmanship and exquisite details its practicality and popularity. This item can help properly maintain your boat's engine flushing out contaminates. Colour:Black Material:Metal Package Contents: 1pcs Motor flusher Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.