The ICU Medical B4019 is a high-flow, 4-way IV stopcock with a luer slip. It is designed to regulate the flow of fluid through a system and can be used in a variety of medical settings. This stopcock is easy to use and provides secure and reliable connections. It comes in a case of 50, ensuring that you have enough supplies for multiple uses. This product is ideal for healthcare professionals who require high-quality and dependable medical equipment for patient care.