Replying to Look PX 12 Ti Jib Wide: Just how WIDE is it?

Ok, so I've been looking all over -- the Look USA site, all the online sales places, yadda yadda, and nowhere can I find tech specs for how wide the brakes are on the Look PX 12 Ti Jib Wide..

Now I'm *assuming* they are 100mm as that's the width of the Rossi Scratch 120/140s... but I want to be SURE before I order this shit online.

ALSO -- I currently run Rossi Scratch 140s but really to save cash I think I am going to get the Look PX 12s. I rarely run above 10 din as it is, so I figured I don't *really* need a din 14 binding. Besides a lower din, are the 120 / PX 12 models any different in construction or durability or anything?