1、Smooth Drainage: Designed with a smooth internal wall that allows for a seamless drainage process, ensures efficient drainage while keeping the bilge area of your boat clean and dry. 2、Premium Material: Made of superior ABS material, boat through hull connector is resistant to seawater corrosion, ensures excellent performance, making it suitable for yachts and RVs. 3、Efficient Design: With an arc slanting design that reduces water resistance, ingenious design enhances drainage efficiency and guarantees boat stability, providing a superior user experience. 4、Precise Thread: The precise thread design makes using it convenient, notch thread wrench dismantling makes installation straightforward and easy, without any risk of damaging the threads. 5、Wide Application: With a 29mm drainage outlet, has a wide range of uses including installing aeration devices and draining bilge water, flexible design is aimed to accommodate various requirements.