Southland 1" Ground Joint Black Iron Union is a high-quality black malleable iron union featuring an inserted brass seat for enhanced durability and performance. Each fitting is individually flag-tagged and proudly displays the Mueller logo cast into the body, ensuring ity and superior craftsmanship. Imported and subjected to rigorous inspection and quality testing, these unions provide reliable, leak- connections i for plumbing and gas applications. Their robust design makes them a choice for professionals seeking secure and long-lasting fittings. Model Number: 521-705BG