Feature: 1. Dual Flow Design: This dual feed muff boat motor flusher features a dual flow design for higher pressure and better cleaning power. Our motor flusher also comes with an adapter for 16mm (5/8 inch) OD hose. 2. Multifunctional: This boat ear muff engine flusher is multifunctional and can be used for routine maintenance to flush out salt and mineral buildup, and it's also great for applying antifreeze to keep your engine from freezing. 3. Easy To Use: This outboard motor water flusher is easy to use, all you have to do is slip our flusher sleeve over the lower unit air intake, connect the garden hose to a standard 5/8 quick connect valve, and flush the engine. 4. Good Compatibility: This dual flow motor flusher has a good compatibility and can be used for most inboard and outboard engines, including for Evinrude, for Johnson, for Suzuki, and more. 5. Sturdy And Abrasion Resistant: This boat dual water feed motor flusher is made of excellent spring steel and rubber material, which is sturdy and abrasion resistant, not easy to be damaged, and has a long service life. Specification: Item Type: Boat Dual Water Feed Motor Flusher Material: Spring Steel, Rubber Removable Hose Joint: Approx. 16mm / 5/8in (Outer Diameter) Suction Cup Size: Approx. 120 x 80mm / 4.72 x 3.15in Installation Position: Motor Air Inlet. Package List: 1 x Boat Dual Water Feed Motor Flusher (with 5/8 Inch Standard Garden Hose Connection)