Frank, I know what you mean. I think they are packing bands. Dunno how you'd get them to stay in the centre of the tyre once the tube is in though. Plenty light enough - may be worth a try.
@ChrisNW started
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Frank, I know what you mean. I think they are packing bands. Dunno how you'd get them to stay in the centre of the tyre once the tube is in though. Plenty light enough - may be worth a try.