We can supply all kinds of inner tubes, including butyl and natural rubber tube. Size: 14x1.75/2.125, 16x1.75/2.125, 18x1.75/2.125, 20x1.75/2.125, 22x1.75/2.125, 24x1.75/2.125, 26x1.75/2.125, 28x1.75/2.125, 24x1 3/8, 24x1 3/4, 26x1 3/8, 26x 1 3/4, 26x2x1 3/4, 28x1 1/2; 28x1 5/8x1 3/8c etc.
