chrismgtis 0 #1 June 22, 2010 I have an Optik camera helmet. The inside says "Shell 2 Mo 5". Does that tell you what size it is? I'm trying to sell this thing. I only used it about 4 times and haven't even drilled any holes or anything for the box. Need the money extremely bad.Rodriguez Brother #1614, Muff Brother #4033 Jumped: Twin Otter, Cessna 182, CASA, Helicopter, Caravan Quote Share this post Link to post Share on other sites