DescriptionThis item is made of premium material for durable and long-lasting use.Puncture-proof liner prevents tire from being compromised by hard material. Substantially reduce tire failure rate during long distance cycling or on terrains of bad condition.Features- Color: Red. - Material: Nylon. - Size: Approx. 8 x 8 x 4cm. - High material, good acid resistance, wear resistance, toughness and good fatigue resistance - Puncture-proof liner prevents tire from being compromised by hard material. - Substantially reduce tire failure rate during long distance cycling or on terrains of bad condition. - When assembling, pay attention to the removal of copper scrap, water and oil. - Warm Tip: Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand! Thank you!