The 4" No Caulk Cast Iron Drain features a robust design with a 3-1/2" metal spud and a 5" brass strainer, making it ideal for efficient drainage in various applications. Constructed from durable cast iron, this drain is built to withstand heavy use and resist corrosion. The no-calk design simplifies installation, ensuring a watertight seal without the need for additional caulking. This drain is perfect for use in kitchens, bathrooms, and other areas requiring reliable drainage solutions, meeting industry standards for quality and performance.