The Schwalbe No.13 is an MTB inner tube with Dunlop valve. The butyl rubber tube is extremely airtight and elastic. The high elasticity means the tube covers a wide range of tire sizes.
The Schwalbe No.13 fits the following tire 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) ;
