Ha ha! Sorry about that. I also did not realize that there were so many choices! None of those actually. Our is like JamieSkye described. It is this one. http://www.amazon.com/gp/product/B000FSN0A4
They also make one with an auto retractor so it pops off the hair for you, sometimes I wish we had that one, but the basic is fine for our good dog who sits quite still when we brush her.
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