The 4" x 12" Black Iron Nipple is a versatile plumbing fitting designed for various applications. Made from durable black iron, this nipple provides excellent strength and resistance to high pressures, making it suitable for both residential and commercial plumbing systems. The 4" diameter ensures compatibility with standard piping, while the 12" length allows for flexible installation options. This nipple is ideal for use in gas, water, and oil applications, ensuring reliable performance in demanding environments. Its robust construction guarantees long-lasting durability, making it a dependable choice for your plumbing projects.