2 x Continental MTB 26 Tubes Continental MTB 26 inner tube made from Butyl Suitable for Mountain Bike tyres. Valve: Schrader Car style valves ETRTO Size:47/62-559 Size: 26 x 1.75 -2.5. Continental is a multinational company which manufactures safe, efficient, and performance-oriented tyres for passenger cars, commercial vehicles, and two-wheelers. We are one of the foremost leaders in tyre technology and tyre production, with a broad product range suitable for use in a variety of conditions and applications. And through continuous investment in research and development, Continental makes a significant contribution to mobility that's secure, cost-effective, and ecologically friendly.