The B-D 5031MS 3-Way Stopcock is a stainless steel plated brass surgical Luer lock piece manufactured by Becton Dickinson. This stopcock serves as a crucial instrument in surgical procedures, allowing for precise control of fluid flow. With its durable construction and reliable brand reputation, this stopcock is a valuable addition to any healthcare facility or laboratory setting.PLEASE READ. An attachment is needed to make it a Luer Lock