Oxygen regulators are intended for the administration of oxygen to patients that are deemed by a physician to need increased oxygen levels to improve or stabilize their breathing conditions. It is a pressure-reducing device that lowers the pressure of the oxygen from a cylinder to a level that can safely be used . Specifications: Model NO.: BM-90ORY Material: Brass Item Name: Yamato Oxygen Regulator for Industrial Uses Mat: Mainbody Brass Feature: Piston-Style Connection Thread: Male Trademark: CBM-TECH(OEM) Transport Package: Standard Export Packing(Ctns) Specification: CE, ISO Origin: China Package Include: 1x Yamato Oxygen Regulator for Industrial Uses