YunSCM 700 25c Presta Valve Best Choice for High Bicycle Tubes Tire Applicable to Road Bikes 2-pack, Tubes, 48mm, Rims, 700x18/25c + Levers,

✅【700x18/25c Bicycle Tube】: Suitable for 700x18c/20c/23c/25c bicycles, 48mm Presta valve, best choice for high rims. Suitable for road bikes. Note: Please check your tire size before purchasing. Tire size is usually indicated on the side of the outer tire. ✅【Space-saving and easy to carry】: The 700 25c tube folds down to a small size, making it easy to carry even when riding long distances while out and about, and avoiding the awkward situation of being unable to ride after a puncture. ✅【High-Quality Butyl Rubber】: This 700 23c tube material provides better airtightness, can retain air for a long time, and does not require constant inflation. ✅【Easy Installation】: Includes two high-quality plastic tire levers, making it easy to change tubes. Helps with tube replacement. ✅【Budget Saving】: Doing it yourself will save you money compared to going to a local shop to change your tires. It can also serve as a spare tube, preventing the awkward situation of being unable to ride after a tube bursts. ✅【Correct Installation Method】: First, push the tube into the rim and inflate it with a small amount of air (20%). Next, mount the tire, making sure the edges of the tire and rim are aligned and the tube is not pinched, then inflate the tube to the correct pressure again. (Please note that if the tube and tire are not inflated together, i.e., if only the tube is inflated, or if the tube is pinched between the tire and rim, air leaks or punctures may occur.) Compatible with wheel diameters of 700mm, tire widths of 18-25mm. (Suitable for tires in the 700x18c-700x25c range). The product includes: 2 x 700x18c/25c bicycle inner tubes, and 2 x tire levers. Tire installation instructions and precautions: 1. The direction of tire rolling is the same as the direction in which the tire is mounted (some tires are indicated by an arrow, and the direction of the arrow indicates the direction of tire rolling). First, clean the inside and outside of the tire to prevent the presence of foreign matter such as gravel and impurities, and then mount the tire according to the direction of tire rolling. 2. After installation, inspect whether the bead (tire edge) is uniformly symmetrical. The bead must be outside the bead at all points and parallel to the bead at all points. Otherwise, there will be wobble while driving. 3. Insert the tube evenly into the tire with a small amount of air (less than 10%), ensuring the carcass is stacked in order and not folded inside the tire (folding it while inflating makes it prone to punctures). Place the tube and tire together over the steel ring, checking that the bottom tire is fully packed into the tire, and ensuring there are no small gaps between the tire and the steel ring. You can then begin aerating the tube. Installation is now complete.