Schwalbe Doc BlueDoc Blue Pro 500 ml (16 oz) New Doc Blue: Now even better formulated for Tubeless conversions. Produced by Stan's NoTubes! It can also be used as a puncture protection preventative for bicycle tubes, tubular tyres and standard Tubeless systems.500 ml (16 oz) bottle, Art.No. 3711Dose: 60 ml/tyre (Race bike 30 ml). Effective ca. 2-7 Months.Thereafter dries to a rubber film. Can be renewed. Only suitable for tubes with a removable valve core.Not effective on large defects (cuts/bursts).