I have a set of oxygen mask bayonets. Both left and right for the MBU20 Combat Edge oxygen mask. One sidea has the rare water landing indictor device, obviously not tested, dont know if it works.For the Military or Aviation collector. Thanks for your time and once again please do not hesitate to ask questions. This item is in the category "Collectibles\Militaria\Current Militaria (2001-Now)\Original Items\Personal, Field Gear\Other Current Field Gear". The seller is "tolly4" and is located in this country: US. This item can be shipped worldwide.