The T&S Brass 002711-40M50 Eterna Spindle Assembly is designed for reliable performance in cold water applications. This left-hand assembly features a spring check mechanism that ensures optimal water flow control and prevents backflow. Each case contains 50 units, making it ideal for bulk purchases and maintenance needs. Constructed for durability, this spindle assembly is a perfect replacement part for enhancing the longevity and efficiency of your faucet system.