Features: Made of higher quality rubber. It have good resistance to penetration, mineral acids and aging with highly resistant to mineral acids and wear and tear. The rubber ensures incredible resistance to extreme temperatures can be better protection.OOTDTY  Improved version thicker rubber tires which is ultra tear-resistant, scratch-resistant and durable in use,feature a high quality valve that preserves more pressure.Compared to other rubber tires,it has a good damping effect anti-slip with double the thickness design guarantees flexibility and buffer capacity, capable to bear any pressure change.It is more strong and more confortable.The replacement inner tire is extremely convenient and simple to install and detach. Fit for most off road motocross pit dirt rocket bike.Specification: Material:RubberSize: As Picture ShownPackage Includes: 2x Inner Tubenote: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.Thanks for your understandings.