Shanrya Bike Inner Tube - Professional Replacement Tube for Bicycles | High Reliability & Easy Installation | Perfect for Road Bikes, Mountain Bikes & Commuting

Feature:1. It is made of butyl rubber material with greatly improved airtightness, temperature resistance, delay aging and longer service life.2. With schrader valve, it is no need to replace the valve core, which is convenient to use.3. The butyl rubber tire inner tube can absorb the vibration of uneven roads to ensure the comfort and safety of driving.4. Easy to install, you can easily replace the old inner tube of the tire in a short time, saving time and efficient.5. It widly fit 12 / 14 / 16 / 18 inch wheel, width between 1.75‑2.125inch tires, suitable for replace the inner tubes of road mountain bikes.Specification:Item Type: Bicycle Inner TubesMaterial: Butyl RubberProduct Color: As Pictures Shown Product Weight: Approx. 145-180g / 5.1-6.3ozValve Type: Schrader ValveMaximum Pressure: 8 BarStandard Pressure: 20 Package List:1 x Bike Inner TubesNote:1. Check the tire to see if there are any bad factors in the steel rim.2. Correctly install the valve of the inner tube and expose the steel vertically.3. Ensure that the inner tube is not pinched between the outer tube and the steel rim.4. Inflate some first to check whether the tire is pinched.5. Inflation of the inner tube should meet the standard pressure (see the words on the sidewall of the outer tire).