Black Ferns co-captain Ruahei Demant is promising they'll peak at the right time in their Rugby World Cup title defence. 

A 33-player squad has been confirmed for the tournament starting in England next month. 

The hosts are hot favourites - but Demant says they'll be up for it. 

Jason Pine caught up with Demant as well as Ayesha Leti-I'iga after the squad announcement in Upper Hutt. 

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