What is It? Game 26.

This week's collaboration with What is It? Blog brings us this strange contraption - can you guess what it is?

Please place your guess in the comment section (post no URL, please - let others play). For more clues, see What is It? Blog. No prize this week, you're playing for bragging rights only.

Update 6/25/07: The answer is ...

This was part of a display of barrel making tools, it's a barrel header, used to force the head into a wooden barrel.