TruDesign plastic pipe reducer connectors 

TruDesign connectors are high-performance, durable marine connectors designed for use in harsh marine environments. Made from advanced composite materials, these connectors are corrosion-resistant, lightweight, and offer superior strength compared to traditional metal connectors. They are ideal for applications such as plumbing, electrical, and ventilation systems on boats and yachts. TruDesign connectors are known for their easy installation, reliable performance, and long-lasting durability, making them a popular choice for marine professionals and boat owners looking for high-quality, dependable solutions.

please note these are white not black as shown in the picture