ãSizeãThis bike tire tube fits for most 700c (622) road bikes, fit for 28 inch tires with a tire width between 20 and 25 inches
ãHigh Qualityã Our bike inner tubes are made of high quality butyl rubber material. Better air tightness, heat resistance, and durable. The nylon plastic tire levers can let you easily get your tube out from the tire when changing the tube
ãNOTEãMake sure inner tube match with the size of tire; Inflate a little air before installment, to avoid crack or damage during installment; Install the valve correctly, which must be 90Â° with steel, and the nut must be well locked; After installment, please check the tube is at the right position between steel and tire, make sure the tubes are not clamped by them; Then inflate the air according to pressure standard of tire
Valve Type: Presta Valve
Valve Length: 60mm
Tube Material: Butyl
Replacement Inner Tube for mountain, cruiser, or kidâs bike with the same tire size.
6Pcs 700x23c/25c Bike Tubes
4 Pcs Tire Levers
1. Please kindly confirm the size of your bike tire before you buy, width between 23mm-25mm tires.
2. Before changing the tube, please check whether there are some stones or sharp things staying in your tire that may break the tube.
3. Remember to always add a little air (to give the tube form) to the new inner tube before installing it. 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. The pressure rating is dependent on the PSI rating of your tire. DO NOT inflate the above pressure rating on the tire!
How to find the source of a puncture?
1. Take the tire and tube off the wheel
Remove the wheel by unfastening the handle holding the axle in place. Then, use a tire lever to get the tire off. Insert the lever between the tire and the rim and work it around. When the tire comes off, pull the tube out.
Tips: It may be easier to remove the tube if you let all of the air out.
2. Remove the object that punctured the tire if itâs still there
If the object is still there, it could re-puncture the tube when you replace it, wasting all your work. Sometimes finding the object is easy, like if a nail is sticking out of the tire. Other times, glass or small rocks get trapped inside the tire, so shake the tire out to get rid of any loose objects.
Gently run your fingers along the inside of the tire to free any embedded objects. If you have gloves, put them on to protect your fingers from cuts.
3. Pump up the tube and look for the hole
Do a visual check for the hole. If the hole is large, it should be easy to see. Check along the entire surface of the tube for obvious holes.
Donât stop looking when you find the first hole. If an object got inside the tire, it could leave multiple holes, so be sure to check the entire tube.
4. Listen for air escaping if you canât see the hole
If the hole is too small to see with a visual check, bring the tube up to your ear. Give it a light squeeze to force the air out, and listen for a âseepingâ sound to hear where it escapes from. Then, use these signs to locate the hole.
Tips: You still might not be able to pinpoint the hole, even if you hear the seeping sound. Use the water method to find its exact location.
5. Dunk the tube into a filled sink to see where bubbles come up from
If you still canât find the hole, fill a sink with water and place the tube inside. Squeeze it so air escapes, and then check where bubbles rise up from. When you see the bubbles, you have an exact location for the hole.
6. Rim Inspection
Inspect the rim strip whenever changing a tire or inner tube. Look for tears and rips, and make sure rim strip is centered over the nipple holes.In the image, the rim strip is damaged, which may cause a flat tire.
NOTE: Hole on inside edge of tube indicates a problem inside the rim, such as from rim strip failure, a protruding spoke or other sharp object inside the rim.
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