Retains air for longer than average. Thanks to the best material quality and uniform wall thickness. Maximum reliability that has proven itself millions of times over.Key Features:ETRTO: 25/40-559Weight: 120 gValve: SVValve length: 40 mmBead: ButylExecution Tube: StandardItem: 12ASizes:25-559 - 26 x 1.0028-559 - 26 x 1.1032-559 - 26 x 1.2535-559 - 26 x 1.3537-559 - 26 x 1.4040-559 - 26 x 1.50