2 Pack 700C Road Bike Tubes 700x35C/38C/40C/43C SV48mm Schrader Valve 700C Tubes Compatible with 700 x 35C 700x36C 700x37C 700 x 38C 700x39C 700 x 40C 700x41C 700 x 42C 700 x 43C Bike Tire Tubes

MORE DURABLE: high-quality butyl rubber compound, Better air tightness and a longer lasting tube. Product Information: Package include: 2 x Bike Inner Tubes, 2 x Bicycle Rim Liners, 2 tire levers, 2 x Valve Caps. Valve Type: Schrader Valve Valve Length: 48mm Tube Material: Butyl Valve Type: Standard (also called Schrader) valves are the most common valve type for bicycles. This short, sturdy valve is also used on car tires and other inflatables. Presta valves are typically found on performance road and mountain bikes. They have built-in valve locks which you twist to open before inflating. How to Choose the Right Size Tube? First and foremost, you want to make sure the tube fits your tire. To determine the size you need to check the side wall markings on your tire where you’ll see two numbers separated by an 'X'. The first number refers to the tire’s diameter. The second number refers to the tires width. Select the tube that has the exact same diameter as your tire. Your tires width should fall into the range of widths listed on the tube packaging. Tips: 1.Please kindly confirm the size of your bike tire before you buy, width between 35-43mm tire. 2.Before changing the tube, please check whether have some stones or sharp things that may broke the tube that stay in your tire. 3.Remember to always add a little air (to give the tube form) to the new inner tube before installing. This will prevent it from bunching up and/or causing a pinch flat or possibly blowing the tire off the rim (when you immediately and fully inflate) which ultimately will pop the tube. 4.Never over inflate past the recommended tire pressure. All inflatable tubes are subject to deflation from mis-installation and certain hazards.