Unmatched Durability and Pressure Retention for Your Ride.
Say goodbye to frequent flats and constant air loss with the Schwalbe bnb DV7A 20 x 1 3/8 hv 32mm inner tube. Designed for riders who demand reliability and long-lasting performance, this inner tube is engineered to keep your tires inflated longer and your ride smoother. Thanks to Schwalbe’s advanced manufacturing process, including a high butyl content and ultra-pure materials, every tube undergoes a rigorous 24-hour air retention test to ensure exceptional airtightness. The result is a tube that not only fits multiple tire sizes but also delivers consistent, dependable performance on every journey.
Key Features
- High reliability trusted by professional bike retailers.
- 24-hour airtightness test guarantees superior air retention.
- Extremely elastic group tube system fits multiple tire dimensions.
- High butyl content and material purity for enhanced durability.
- 100% fully recyclable for eco-conscious riders.
- Standard 20-inch size compatible with various tire widths.
Technical Specifications
- Model: Schwalbe bnb DV7A 20 x 1 3/8 hv 32mm.
- Compatible tire sizes: 37-438, 28-440, 37-440, 28-541, 37-451.
- Type: Standard 20 Inch Dutch inner tube.
- Material: High butyl rubber with exceptional purity.
- Tested: Factory inflated and 24-hour airtightness tested.
- System: Group inner tube system with extreme elasticity.
- Air retention: Holds pressure significantly longer than standard tubes.
- Environmental: 100% fully recyclable construction.
- Proven track record: High reliability validated over many years.

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