Looking for a certain brain teaser puzzle/toy???

I was just wondering if anyone knew of a brain teaser puzzle/toy is and where I can get one. It's in the shape of a circle and on the top are all these pegs that stand up. The object of the game is that you need to keep on pushing out the pegs to the outside edge of the puzzle and back in vice/versa to get what looks to be triangles all on the outside and than when all the black triangles are all out they form like a ring around the puzzle, than you have to push all the pegs around to get those triangles back into the game. Hopefully someone knows what this game is called and I'm sorry if I confused you with this question. Its kind of hard to explain a mind teaser game!!