The z12 ti are the most horribly aweful bindings I have ever seen. First off, go to a store and pick them up. They feel like they are made by fisher price. They are extremely lightweight, and not in a good way. They are like 100% plastic, and not like a strong durable abs platics. they are the kind of plastic that shatters when it gets cold, And that is just what happened. My friend just bought the 07 karmas and put some z12ti on them. One of the lightest and sickest park setups ever. On his fourth day on them we were hitting rails, and he fell off a rail and his tip went into the ground. His monstrous 145 lb 5'5" body caused the toe wing to straight break off. Picked up the pieces and the fucking things are hollow weak shit plastic. So, in other words, from my experience these things suck balls. I have a pair of s912 tis on my park skis which I am not a big fan of, however, compared to the z12, the s912 is like the best binding ever. That is just sad.