The 4" Extension Cover Brass Plug (1/4" tapped) from Braxton Harris is designed for effective sealing in various applications. Made from durable brass, this plug is resistant to corrosion and wear, ensuring long-lasting performance. The 1/4" tapped design allows for easy installation, making it compatible with a wide range of fittings. This extension cover plug is ideal for plumbing and electrical projects, providing a secure and leak-free connection that enhances the reliability of your systems.