the ZRR 18 is an 18 Din binding, and also has a full 360* pivot heel. It also features 10mm lateral travel vs the 1-14 spacers 7mm. Also the 18 Din is Race Stock, so no high tech graphics, just plain old fasioned Look Bindings. They look like they are from 1970, with more of a square style of appearance. Last year's binding has not changed simply because it is so good.
It is the binding I have ridden for years and it is by far the best binding for advanced riders in NewSchool Skiing. Rossi also makes this same model, and I believe they call it the Scratch 180, or the 180 Pro Race. Most of the time you have to special order them.
'now the rule of thumb here....'
'RULE OF THUMB! In the early 1900's it was legal for a man to beat his wife, if he used a stick no wider than his thumb!'
'That sucks, you cant do much with that, should have been the rule of wrist!'