The 4" No Caulk Cast Iron Drain with 3-1/2" Metal Spud and 4" Nickel Bronze Strainer by Braxton Harris is engineered for durability and ease of installation. This drain system eliminates the need for caulking, providing a secure and watertight seal. Made from high-quality cast iron, it is designed to withstand heavy use and resist corrosion. The 3-1/2" metal spud ensures compatibility with various plumbing systems, while the nickel bronze strainer adds a touch of elegance. This product meets industry standards, making it a reliable choice for both residential and commercial applications.