The Wavin Osmasoil S/S Boss Adaptor in 40mm black is a high-quality plumbing component designed to facilitate connections in soil and vent systems. Its manufactured by Wavin, a renowned name in the industry, known for their durable and dependable products. This boss adaptor features ring-seal technology for a secure, leak-proof connection. Made from robust material, it promises longevity and can withstand heavy-duty use. Its 40mm size is suitable for most standard pipe sizes and its black colour blends seamlessly with your existing pipework.