Bamboos

Here is one source:

http://www.tonkincane.com/

There are many others if you run an Internet serch for Tonkin cane.

Dale Yessak

Thanks Dale for your suggestion, I've finded a good site searching with "tonkin cane":

http://www.bamboohardwoods.com/bamboo/h ... poles.html

The type called "Moso" has diameter up to 6''.

Best

Gianrico