Heat shrink or the likes. Available some tackle shops or electrical stores.
Not seen clear. I use diamond heat shrink in black.

Most electrical wholesallers carry clear heat shrink but not going to be easy to get it off latter. I have been giving this some thought as I have just got a Synit rod with a split butt & am thinking of wrapping it with a specific electrical tape called self amalgimation tape. Not your regular electrical tape. I think it will protect the blank & come off without leaving too much residue.
I will update here once I've given it a go.

Nice Stonefish did you get that off Graeme?

Wouldn't recommend that hockey stick tape, was it Mazon shaft guard by any chance? leaves a horrible residue that is impossible to get off a hockey stick and imagine it would be worse on a fishing rod. It's also very thick and not that flexible for the small curvature of a blank

rockz wrote: cheers fellas, would be nice to keep it clear as the rod specs are written down there. found some clear shrink tube on ebay and also some clear hockey stick tape at rebel, that tape sounds interesting pete, is it stretchy?

Yeah AJ it's very stretchy infact you have to stretch it to get it to adhere. The problem with heat shrink is you have to get it over the thick part of the butt & then getting it shrink down enough.

Clear plastic hose works well too.