Saddle bars...huh?

[GeorgeGuns]

Okay, I bet its been posted before but I sure missed it. I'd like to know the difference between Full QH, Semi QH etc bars. Any good info links?

[appyday]

Full QH bars are widder for very wide horses, usually with no withers...Simi QH bars are for horses not as wide...I have a simi QH tree on my Phil Harris saddle I use on Roger