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 190g. Applicable Tyre Sizes: 40-559 – 26 x 1.50 47-559 – 26 x 1.75 50-559 – 26 x 2.00 54-559 – 26 x 2.10 57-559 – 26 x 2.25 60-559 – 26 x 2.35 62-559 – 26 x 2.50
