Feature 1Adopt high quality butyl rubber, high temperature resistant and anti-aging, long service life. 2Clear lines on the inner tube surface, highly elastic, non-slip and wear resistant. 3Metal valv more→e with high air tightness, sturdy and durable, long using time up to 180 days with an inflation. 4Lightweight and easy to install, reliable to use, bringing great using experience. 5There are multiple specifications for you to choose from, meeting your different needs.SpecificationItem Type: Inner Tube Condition: 100% brand newMaterial: Butyl rubberColor: BlackValve: BentOptions: 14x2.125, 14X2.50, 16x2.125, 16X2.50, 16x3.0, 18X2.125, 18x2.50(optional)Features: High air tightness, frost-proof,