The 12MJ-12FJX-4FB Gauge Port Fitting by Fittings Unlimited Inc is designed for precise fluid measurement in various applications. This fitting features a 12mm male joint and a 12mm female joint, along with a 4mm gauge port, allowing for easy integration into your plumbing system. Made from durable materials, it complies with industry standards, ensuring reliability and safety. Its design minimizes leaks, providing a secure connection for accurate readings. Ideal for both commercial and industrial use, this fitting enhances the efficiency of your fluid management systems.