For racing bikes, weight approximately 70 gram and for tyre widths from 3/4 up to 1.00" ; suitable dimensions22-630 27 x 7/825-630 27 x 1.0023-622 28 x 0.90 700 x 23c18-622 28 x 3/4 700 x 18c20-622 28 x 3/4 700 x 20c22-622 28 x 7/8 700 x 22c23-622 28 x 7/8 700 x 23c25-622 28 x 1.00 700 x 25cbesides the quality of the ingredients, the purity of the rubber compound is decisive for the quality of the tube; Before extrusion, the basic material is forced through a total of seven filters under enormous pressure; All tubes are inserted and inflated into a mold for the vulcanization process;
Only this ensures an even wall thickness and high air retention; all tubes are inflated and stored for 24 hours to test for air retention; Afterwards, every tube is carefully checked individually by visual inspection; The special quality control which prevents unpleasant surprises;
The schwalbe tube has been valued by german bicycle dealers for its high reliability for many years; only an extremely high-quality and reliable tube is equal to these demands; all valves are nickel-plated and threaded; The valve core is always replaceable;
Also, schwalbe tubes with a classic bicycle valve can be inspected for pressure as they have a high-pressure valve core; As an external indicator, every tube has a stylish dust cap made out of transparent polycarbonate; the schwalbe tube is the only tube which carries the vsf all ride quality stamp; Vsf is an association of particularly dedicated and quality-oriented german bicycle dealers.
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