The Schwalbe Tube No. 13 fits 26" tires with a width of 40-62 mm and is used in various applications including mountain bikes, youth bikes, city/trekking bikes, e-bikes, etc. Due to their excellent manufacturing, Schwalbe tubes have proven themselves on the market for years. They are uniform in wall thickness and round in shape. Their precise construction makes them durable at the seams. A comparative test showed that the Schwalbe tube maintains air pressure significantly longer than other tubes (the latter lost almost twice as much air pressure as the Schwalbe tube in 30 days). A possible reason for this could be a lower butyl content in the other tubes. The special quality of Schwalbe tubes arises from the uniqueness of their rubber mixture. To ensure this high quality, each Schwalbe tube is inflated and tested for at least 24 hours before leaving the factory. **Features:** - Butyl rubber provides double air retention - 24-hour test for each tube - High elasticity allows coverage of many tire sizes per tube - Recycling process achieves a very good energy balance **Suitable for tire sizes:** 40-559 | 26 x 1.50 42-559 | 26 x 1.60 44-559 | 26 x 1.625 44-559 | 26 x 1.75 47-559 | 26 x 1.75 47-559 | 26 x 1.80 47-559 | 26 x 1.85 47-559 | 26 x 1.90 50-559 | 26 x 1.90 / 2.00 50-559 | 26 x 1.90 50-559 | 26 x 1.95 50-559 | 26 x 2.00 54-559 | 26 x 2.10 54-559 | 26 x 2.125 54-559 | 26 x 1.95 55-559 | 26 x 2.15 57-559 | 26 x 2.125 57-559 | 26 x 2.20 57-559 | 26 x 2.25 60-559 | 26 x 2.35 62-559 | 26 x 2.40 62-559 | 26 x 2.50 **Contents:** - Schwalbe Tube 26'' No.13 (SV13) workshop packaging 25 pieces