The 3" x 5-1/2" Black Iron Nipple is a robust plumbing fitting designed for connecting two pipes in various plumbing applications. Made from high-quality black iron, this nipple is durable and resistant to corrosion, ensuring a long-lasting connection. Its dimensions make it suitable for a variety of installations, including gas and water lines. This fitting meets industry standards for safety and reliability, making it a trusted choice for both professional plumbers and DIY projects. The threaded ends allow for easy installation and secure connections, providing peace of mind in any plumbing system.