The Wavin Osma RoundLine 0T149B Rainwater Adaptor 68mm x 110mm in Black is a high-quality PVC-U fitting designed to connect smaller RoundLine gutter pipes to larger drainage systems. Perfect for domestic and commercial rainwater management, this adaptor ensures secure, leak-proof connections and smooth water flow. Made from durable, weather-resistant material, it offers long-lasting performance and simple installation for efficient roof drainage.