The 4" Cast Iron Wing Nut Test Plug - Angle from Braxton Harris is designed for effective sealing and testing of plumbing systems. Made from high-quality cast iron, this test plug ensures durability and resistance to wear. The angled design facilitates easy installation in confined spaces, making it a practical choice for various applications. This product meets industry standards, providing reliable performance for maintenance and testing tasks. Ideal for both residential and commercial plumbing, it is an essential tool for ensuring system efficiency.