If your hamster is a really serious chewer, and you are in the UK, I highly recommend these cardboard tubes (
https://www.ebay.co.uk/itm/6-x-Cardb...YAAOSwo4pYmaQq).
They are the insides from rolls of fabric, and are sold by a fabric warehouse online. I have bought them for gerbils and one tube lasts for months, even with the most voracious chewers. They are made of very thick cardboard and they are better value than the pet shop cardboard tubes.