Original Scott CRU-60/P Terminal Oxygen Block, Use on ejection seat aircraft ,Used to connect aircraft oxygen supply hose, bailout bottle emergency oxygen supply hose, oxygen mask hose,. NSN: 1660-00-076-9662 , very good Condition , note that all our items are pure collector items or display items. The items are not tested for real use and have no aeronautical exams or clearances. Use is at your own risk !