1、Made of high quality butyl rubber material, this interior tire tube is strong and durable. 2、High strength, excellent elasticity, not easy to break. 3、180 days without leakage, suitable for long and short biking. 4、Lightweight and small, easy to install and use. 5、A great choice for cycling lovers. This interior tire tube is made of high quality material. It is durable and no air leak. Suitable for long and short biking, a great choice for you. Features: 1. Made of high quality butyl rubber material, this interior tire tube is strong and durable. 2. High strength, excellent elasticity, not easy to break. 3. 180 days without leakage, suitable for long and short biking. 4. Lightweight and small, easy to install and use. 5. A great choice for cycling lovers. Specification: Condition: 100% Brand New Item Type: Interior Tire Tube Material: Butyl Rubber Rubber Optional Style: 12*1.75/2.125 AV, 14*1.75/2.125 AV, 16*1.75/2.125 AV, 18*1.75/2.125 AV, 20*1.75/2.125 AV, 20*1.75/2.125 Lengthened AV, 22*1.75/2.125 AV, 24*1.75/2.125 AV, 24*1.75/2.125 Lengthened AV, 26*1.75/2.125 AV, 26*1.75/2.125 Lengthened AV Size: Approx. 10 * 5cm / 3.9 * 2.0inch Weight: Approx. 216-467g Package List: 2 * Interior Tire Tube