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. The AV10D is extremely
durable for the demands of downhill use & has a strengthened rubber
foot to protect the valve against tear-off. Valve length of 40mm for
standard version. Weight 260g.