You will get a 6-pack of 700c x 35-43c bike tubes with 60mm / 80mm Presta valves, allowing for easy removal and installation when changing tubes. Tire tube replacement: These bike tubes are made from premium butyl rubber, offering excellent sealing performance, ozone resistance, anti-aging properties, shock absorption, and electrical insulation. Easy to install: Installation is quick and straightforward. Follow the inflation guide when inflating a tire from a complete flat. Replace old tire tubes hassle-free within minutes, saving time and effort. Please confirm your bicycle tire size before purchasing. Always inflate the new inner tube slightly (to give it shape) before installation. This helps prevent bunching, pinch flats, or the tire blowing off the rim during full inflation, which could damage the tube. Type: 60mm / 80mm Color: Black Material: Butyl rubber Package Contents: 2 x Bicycle inner tubes Note: The package includes only the items listed above; other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.