http://www.ribblecycles.co.uk/sp/roa...de/LOOKPEDZ330
you do need a tool for it which Look dealers only carry (apparently).
I had the 16nm version before. I'm under the assumption theyre not for everyday use. Mine cracked after 1.5 months and I remember the last time I used it was on a group ride with lots of stop/go.
I broke 3 blades in 2 years. Sent back to Look and replaced under warranty all 3 times
That's pretty bad.
I don't think I'd ever go back with them because of durability issues. Otherwise theyre an excellent choice for racing (I assume).