Tubes that size are probably easiest to find from modelmaking suppliers, it's the sort of thing you'd find on scale models of trains and steam engines
http://www.hobbyholidays.co.uk/products.php?cat=124
Tubes that size are probably easiest to find from modelmaking suppliers, it's the sort of thing you'd find on scale models of trains and steam engines
http://www.hobbyholidays.co.uk/products.php?cat=124
Be good. And if you can't be good, be good at being bad.