Valve Type Schrader. SIZE: 32mm Schrader Valve. Included Components 2 pcs 20x4.0/4.5 AV32mm Schrader Valve bike tubes. 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.

Valve Type Schrader. SIZE: 32mm Schrader Valve. Included Components 2 pcs 20x4.0/4.5 AV32mm Schrader Valve bike tubes. 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.