Check the valve position to ensure that the installation direction is correct. SIZE: 32mm Schrader Valve. Safe Bike Tubes: Pre-installed with Sealant to provide maximum puncture protection and prevent flat tires on your bike.The self-repairing inner tube is a thicker design, which is more durable than the normal inner tube.The puncture repair fluid circulates through the inner tube, automatically sealing the punctures.After testing, the leak can be repaired within 5~8 seconds under normal conditions.
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