Photo 1 of Heavy-duty Inflatable Inner Tube Replacements for Ninebot by Segway D18W, D28U, F65, F40, F30, F25 Scooter Pneumatic Inner Tires Thicken Inflated Spare Tyre not sure on size

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Photo 1 of Heavy-duty Inflatable Inner Tube Replacements for Ninebot by Segway D18W, D28U, F65, F40, F30, F25 Scooter Pneumatic Inner Tires Thicken Inflated Spare Tyre not sure on size Photo 2 of Heavy-duty Inflatable Inner Tube Replacements for Ninebot by Segway D18W, D28U, F65, F40, F30, F25 Scooter Pneumatic Inner Tires Thicken Inflated Spare Tyre not sure on size