YunSCM 700 25c Presta valve 700 23c bicycle bicycle tube 700 700 23c bicycle road bike tube 700 tire tube 700 road bike tube 700 cross bike tube 700

✅【700x18/25c Bicycle Tube】: Applicable to 700x18c/23c/25c bicycles, Presta valve 48mm. Suitable for road bikes and cross bikes. Note: Please check the tire size before purchasing. Tire size is usually displayed on the side of the outside tire. ✅【Does not take up space and is convenient to carry】: The 700 25c tube has a small volume when folded, so you can carry it with you when you go out and run long distances, avoiding the awkward feeling of not being able to ride after the tube gets punctured. . ✅【High Quality Butyl Rubber】: The 700 23c tube made of this material can provide better airtightness and retain air for a long time, so you don't have to hit the air all the time. ✅【Budget Savings】: Doing it yourself will save your budget than going to the local store to replace your tires. As a spare bicycle tube, you can avoid the awkward feeling of not being able to ride after the tube bursts. ✅【Correct installation method】: First, push the tube into the rim to let a small amount (20%) of air into the tube. Next, install the tire, make sure the edges of the tire and rim are aligned and the tube is not pinched, and then re-inflate the tube to the correct air pressure. (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 the edge of the rim, air leaks and punctures may occur. Please note that it may become easier.) Compatible with wheel diameter 700mm, tire width 18~25mm. (Tires common to the 700x18c-700x25c section). Item includes: 2 x 700x18c/25c bicycle tubes. About shipping: The shipment is timely, the package is stored in the Amazon warehouse, and once we receive your order, Amazon will ship your item in a timely manner. How to install tires and precautions: 1. Tire rolling direction is the tire mounting direction (some tires are marked with an arrow, the direction of the arrow is the tire rolling direction). First, clean the inside and outside of the tire to prevent the presence of foreign substances such as gravel and impurities, and then install the tire according to its rolling direction. 2. After installation, inspect whether the bead (tire edge) is uniformly symmetrical, the bead must be outside the bead in all places and parallel to the bead in all places. Otherwise, there will be blurring when driving. 3. Insert the tube evenly into the tire with a small amount of air filling (less than 10%), stack the carcass in order and do not fold it inside the tire (folding and inflating it is easy to puncture), the tube and tire together over the steel ring, and check whether the lower tire is completely packed into the tire, and there should be no small steps between the tire and the steel ring. You can then start aerating the tube. The installation is now complete.