YunSCM 2 Pcs 20" Heavy Duty Bike Inner Tubes 20x4.0/4.5 AV32mm Schrader Vavle Super Automatic Repair Self Sealing Puncture Resistant Compatible with Inch Fat Tyre Bicycle

SIZE: 32mm Schrader Valve. Fits all 20"x4.0/4.5 fat bike tire tubes Installation Precautions:Please check the side of your tire for the tire size your bike uses Easy To USE: The Self Sealing Bike Inner Tube is a self-repair for some small holes or very fine cracks.For example, after a long time, some places will leak air quietly,accidentally hit nails and other problems, which are easy to repair.It is worth noting that our self-repairing inner tube can be used within the normal temperature environment and cold days -15 ℃,and it is more conducive to travel in cold weather. Safe Bike Tubes: Pre-installed with Sealant to provide maximum puncture protection and prevent flat tires on your bike.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. Ultra Durable: Our inner tubes have higher puncture resistance , and the body can withstand more friction and wear, thus extending the service life of the tube, reducing replacement frequency and maintenance costs. And in long-term use. Please note: Because the Self Sealing fluid is flowing, in order to prevent the liquid from flowing out during operation, please do not concentrate the center of gravity or the liquid near the air nozzle when pumping up Installation: 20"x4.0"/4.5" fat bicycle replacement inner tube for easy installation and removal. Check the valve position to ensure that the installation direction is correct This inner tube is compatible with the corresponding models of mountain bikes, road bikes, Cruiser bikes, electric bikes For long-distance travel or use in remote areas, if a tire leak occurs, using a self-sealing inner tube is a very convenient emergency solution, allowing the vehicle to continue riding to the nearest repair shop for professional repair. Note: After a tyre/inner tube puncture, the self-sealing inner tube is only a temporary solution and cannot replace professional tyre repair. If the sealant leaks out or air pressure cannot be maintained, it is recommended to go to a professional tyre repair shop as soon as possible for a complete tyre repair.