What are these types of fletchings called?

Does anyone know what this kind of single-piece fletching is called, and where I can buy arrow shafts with it? I would swear on a stack of bibles that I saw it for sale at a place in Albany, but when I called about it today they said they had no idea what I was talking about.



I've also seen it with the fletching and nock as a single piece. Either would be cool.

They're called vanes. As for where you can buy them... it varies.