Ninja Mask Help - The Half mask, what and where?

Hey guys and gals, been searching around for a while now, and always have been intrigued..





Looking online for what i perceived to be a ninja mask, ive only come across the full headed black hood to be associated with the 'ninja mask'.





What -I'm- looking for is this:





http://www.freewebs.com/anime-naruto-info/normal_Demon_Brothers.jpg





http://i19.ebayimg.com/01/i/07/49/4a/a7_1.JPG





Is there a particular name for this mask that would make it easier to find and therefore buy?





Does anyone know where I could possibly buy one of these? (I'm living in Australia/Victoria so either online or local!)





Thanks in advance!Ninja Mask Help - The Half mask, what and where?
http://www.cryoflesh.com/accessories.html





theres a pretty good selection there, good site too