Guys,
Sorry this seems like offtopic to this forum, but i really need the experts to help me identifying this item.  Im collecting 1/6 military figures, i ve been having this item for sometime now, but i dont know what it is, ive been researching and the item looks like a oxygen hose regulator.  Perhaps anyone here has some references pictures of the real thing and how do you connect it to the oxygen mask hose, i have attached the link of the pictures below (the item is the one in red circle), any help would be greatly appreciated

http://i300.photobucket.com/albums/nn1/hivedesign/bendable.jpg

http://i300.photobucket.com/albums/nn1/hivedesign/hose.jpg

references:

http://i300.photobucket.com/albums/nn1/hivedesign/ox-mbu14v1p_1a.jpg

http://i300.photobucket.com/albums/nn1/hivedesign/fig1-40.jpg

http://i300.photobucket.com/albums/nn1/hivedesign/km34-002.jpg

Regards

Fei