Schwalbe tubes are designed & manufactured to retain air pressure considerably longer than their competitors. Not only is each individual tube inflated & inserted into a mould to ensure that there is even wall thickness & excellent air retention, they are also stored under pressure for 24hrs to test air retention. Valve length of 40mm for Standard version. Weight 105g.
Applicable Tyre Sizes:
37-438 – 20 x 1 3/8
28-440 – 500 x 28a
37-440 – 500 x 35a
28-451 – 20 x 1 1/8
37-451 – 20 x 1 3/8










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