The liquid patch. Works fast and reliably. Doc Blue seals holes in tubes, tubulars or tubeless systems. Use for repair or preventing punctures. Puncture protection liquids have been around for a long time, but all existing products were unable to meet our demanding standards. Doc Blue combines several different principles and is therefore much more effective. Finally, now there is a simple and effective solution for puncture repair and prevention. Works on schrader and presta valve tubes with removeable cores.
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