High quality material, wear resistance, to use. Thicker than one, so you can get a better over ability. Thickened inner tube, 13 x 5.00-6 electric scooter tire Colour: black Material: rubber Package Contents: 2 x Inner tube Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.