Check out
www.cstcomposites.com, also check out their adjustable spreaders, I'm going to order a set for my boat, instead of proctors, I'll have to make my own mast collar to suit is the difference. Carbon arms will be $50.00 cheaper than the proctor aluminium arms.
<img src="http://www.catsailor.com/forums/images/graemlins/cool.gif" alt="" />
Regards