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 95g

Applicable Tyre Sizes:
28-406 - 20 x 1 1/8
32-406 - 20 x 1 1/4
35-406 - 20 x 1.35
37-406 - 20 x 1 3/8
40-406 - 20 x 1.50