The 4FJ-6MJ Straight Expander from Fittings Unlimited Inc is designed to facilitate smooth transitions between different pipe sizes. This expander features a 4FJ to 6MJ configuration, allowing for versatile applications in plumbing and industrial settings. Made from durable materials, it ensures long-lasting performance and resistance to environmental factors. This fitting meets industry standards for safety and reliability, making it suitable for various systems. Its easy installation process makes it a go-to choice for both professionals and DIY projects.