4 PCS Heavy Duty Bike Tubes 4 Packs 700x23 700x25C 48mm 80mm Road Bike Inner ...
The bicycle inner tube is made of high quality butyl rubber. Size: 4 PCS 48mm. Size: 4 PCS 48mm. It is stronger and harder to break. Higher air tightness and can withstand higher pressure. Capable of high-strength impact.