Continental Cross 28 700 x 32-42c Bike Inner Tubes - Presta 42mm Valve (Pair),Black

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Registered Office: Unit 12, The Tangent Business Hub, Weighbridge Road, Shirebrook, Mansfield, NG20 8RX, United Kingdom. Despite their flaws, latex tubes are a faster and lighter, so worth the investment if you're aiming to be competitive. In this high pressure valve, it is the air pressure that shuts the valve and then the closing of the top section that keeps it shut. We wouldn't get very far over the years if we sent damaged items, lord knows where we'd even source pre-damaged inner tubes!Another example might be 700 x 18-23c, which seems less obvious but 700c is the diameter of Road, Cyclocross, Adventure Road and Hybrid bike wheels, and the numbers relate to the width in millimetres, so 18mm-23mm wide.

New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging . Self-sealing inner tube that will minimise any inconvenience from punctures Contains a liquid sealant that will seal a puncture in the tread area up to 3 mm wide, upon rotation of the wheel Durabl. They look like a cross between the two valves, with a wider lower section, like the Schrader, then a collar and a narrow top section, like the Presta. unless we agree that you may dispose of them, in which case please comply with the manufacturer's instructions before disposing of hazardous goods. You can change your choices at any time by visiting Cookie preferences, as described in the Cookie notice.To inflate or deflate a Presta Valve, the top section must be unscrewed, allowing the core of the valve to be free to move. Presta valves are often used on road bikes which run at higher tyre pressures as well as mid to high-end mountain bikes.