hey guys i work for australia post. just a bit of info for u. if u send anything through aus post make sure u put fragile stickers on it other wise it will just be thrown around. the fragile items go into a cage which isnt allowed to be tipped onto a conveyor belt unlike normal parcels.make u can send is 20kg item. the bigget this i have seen come in are car seats that ware folded all the way forward, huge fmic, exhausts, extractors, manifolds as we do pick up for an online parts place in hallam.