Originally Posted by old and new

Why would you need help ? The bar's strange for sure. It appears to simply be a bar set-up with an unconventionally attached stem, I've seen'em.
If you wanted to replace them or just to know, it's a 1 1/8 "threadless steerer" design. The most common type/size used on Mountain Bikes for many years. You would buy a "threadless" stem and a bar, 1" flat or hi-rise or...
The bars look OK though. To buy different is cheap for such bikes. www.jensonusa.com
Just to look, using my given specs.