Please note, this item ships from an international seller. Expected delivery is 10-15 days. Specification: Tire Size (inch) Minimum Width Maximum Width 241.752.125 Check The Size Of The Tire Sidewall-e.g. "24 X 1.75" Is Perfect Schrader Valve (automotive Type) Caution: The Tube Can Only Be Inflated After It Is Placed In The Appropriate Wheels And Tires. Any Inner Tube That Is Inflated Outside The Tire Can Only Withstand A Fraction Of The Normal Pressure. The Pressure Guidelines Only Apply When Placed In The Tire. Features: 1.suitable For Most Mountain Bikes. 2.good Self-closing Performance, High Air Tightness, And Air Pressure Above 8mpa. 3.high Temperature Resistance, Freezing Resistance, High Strength And Long Life. Package Including: Package Inclulding:2x Inner Tube Package: Including 2 Inner Tube Of Mountain Bike, ; The Tyre Lever Is A Good Helper When You Install The Tyre; It Helps To Remove The Inner Tube And Support It, So That You Can Install It More Conveniently High Quality Materials: The Materials Of Our Bicycle Inner Tubes Are Carefully Selected; The Inner Tube Is Made Of The High Quality Tough Rubber Material Which Has Seamless Structure And Is Very Durable; Please Use It At Ease Note: When Replacing The Inner Tube Of Bicycle, Please Carefully Check Whether There Are Foreign Matters Inside The Outer Tube, And Make The Inner Tube Completely Placed Inside The Outer Tube; Do Not Over Inflate The Tire As It Will Burst Advantages: Our Bicycle Inner Tube Has Good Properties, Such As Good Air-sealed, Strongly Heat-resistance, Strong Anti-aging And Easier To Inflate; Good Air-sealed Means That You Can Ride Long Time Without Having To Spend Much Time Inflating The Tire Application: The Size Is 24" X 1.75", Which Is Suitable For The Replacement Of The Inner Tube Of Mountain Bike; If There Are Any Problems, Please Contact Us In Time, We Will Try To Give You A Satisfactory Reply