I need a handle for my oriental 4 cup teapot. Metal covered in bamboo about 5 inches across?

I don’t know about finding one that is metal covered in bamboo, but there are several varieties sold by ceramic suppliers such as:

http://www.chineseclayart.com/mall/c110/s25729/store_accessory.asp

http://www.bigceramicstore.com/Supplies/TeapotHandles.htm

http://www.axner.com/axner/supplies/teapothandles.php

http://www.aftosa.com/handles.html

I hope you can find something that will work for you. Good luck.