2 Pcs 700C Self Sealing Heavy Duty Bike Tubes 700x35C 700x38C 700x40C 700x42C AV48mm Schrader Valve Automatic Repair, Puncture Resistant Compatible with 700x35C/36C/38C/40C/42C/43C Bicycle Tire

28 inch Heavy Duty inner tube: 700x35/43C AV48mm (35/43-622) Heavy duty bicycle replacement inner tube, these inner tubes are ideal for a wide range of applications. Enhanced the ductility of the heavy load tire, so that the scope of application is expanded, Compatible with 700x35C 700x36C 700x37C 700x38C 700x39C 700x40C 700x41C 700x42C 700x43C tires. High quality butyl rubber: Made of high quality butyl rubber composite material, with good air tightness, heat resistance and durability. Every product is rigorously screened before it is delivered to you. Excellent shock absorption ability :The heavy, strong, highly durable butyl rubber made from these inner tubes is a perfect shock absorber to reduce vibration and eliminate the shock caused by bumps and rough surfaces on the road or pavement. Heavy Duty butyl rubber for maximum ride comfort - upgrade your ride experience. 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. Newly Upgraded Thickened Inner Tube: The content of butyl rubber in the thickened inner tube is sufficient, the weight of the conventional inner tube is 300g, and the weight of the thickened inner tube is 330g. The heavy-duty inner tube is about 15% heavier than the conventional inner tube, thicker and more airtight. Safe Bike Tires：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 tower.The bicycle inner tube rolls through the tire repair liquid to automatically fill the punctured area.After testing, the leak can be repaired within 5~8 seconds under normal conditions. 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. Attention: The diameter of the Schrader Valve 8mm, which is the international standard size. If your tire rim hole belongs to Presta Valve 6mm, purchasing Schrader Valve may cause installation difficulties and errors. Please consider purchasing the corresponding valve for installation to avoid situations where the valve hole diameter is not suitable!