What Brand Plugs are these
 

I picked up some turbo glow plugs for relatively cheap and there were about a dozen or so of these. Some are labeled 6, some 7, some black, some not. No other identifying marks are on them, just the tapered top of the tip. Any help is appreciated. I'll post the photo in a minute.

Having trouble uploading or attaching, whatever. Anyway heres a couple of the plugs.

http://imgur.com/0XGKKmc