The 3-1/2" x 4" Black Iron Nipple is a robust plumbing component designed for durability and strength. Made from high-quality black iron, it is ideal for use in gas and water applications. This nipple features standard threading for easy installation and compatibility with various fittings. Its dimensions make it suitable for a range of plumbing configurations, ensuring reliable performance in both residential and commercial settings. Compliant with industry standards, this nipple is a dependable choice for your plumbing needs.