Transit cases
 

I`m looking for those metal cases used for transit. (For shipping myself stuff during a trip, I will NOT use them as saddle bags)
I found that the Zarges and Stanex made in aluminium are very expensive and I couldn`t find the steel ones like the ones used by the Dakar assistance!!
Any suggestion?

In Europe you can buy steel tool boxes for construction sites at the building supplies stores (they are like supermarkets). Don't know about Mexico...

Do you know if anyone sells them by internet, or a specific store where I can asked somebody to buy them for me?
Thanks