Air chamber 12×2,125 Air chamber Unicycle Valve 45º Valve Measures: 12 1/2 x 2 1/4 (57-203). Compatible with: Children’s Bicycle, Unicycle, Electric Bicycle.
【High quality】: made of higher quality butyl rubber, which is ultra tear-resistant, scratch-resistant and durable, features a high quality valve that retains more pressure.
【Stable performance】: the rubber tires of the new version have good flexibility and cushioning ability, with the ability to withstand pressure changes, the valves are well made and can retain more pressure.
