Well, there are a lot of different kinds of handle bars on the market today, I'll list a as many as I know. There are 2-peice bars, which are the most common style of bars. There are 4-peice bars, which are stronger but alot heavier than 2-peice bars. And there are 6-peice bars, wich are even stronger than 4-peice, but still are a lot heavier than 2-peice. And finally there are 8-peice bars wich I don't know much about, except that they look kind of weird.