Air Nozzle: 90 Degree Air Nozzle Suitable for e100 e200 Bladez Material: Rubber whose air tightness, elastic damping and aging resistance are better than natural rubber. which provides long-term reliability for your electric scooter wheels EASY INSTALLATION Product Name: Inner Tubes Size: 200x50mm (8 inch x 2 inch) Material: Rubber Color: Black Package Contents: 4 x Inner Tubes Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.