An Adze that can be added to the 2010 and 2018 models of Ergo, Nomic or Quark.
Includes the two bolts required to fit it.
According to Petzl they are also retrofitable to older Nomics but only if you fit a 2010/11 Nomic Pick at the same time - however we disagree, at least unless you are prepared to do some bodging.
Weight of hammer adze alone without nuts and bolts is 69g.