Heidenau two-wheel air hose The Heidenau two-wheel air hoses are consistently made of natural rubber. This material is very robust and has high safety reserves. Furthermore, by comparison with synthetic material (butyl), significantly higher expansion behavior can also be covered by many tire dimensions with only one hose size. - Cross Hose Heavy Cross - strengthened construction - Wall thickness: 4 - 4.5 mm - Valve type 34 G - valve straight - Valve position: Center of the hose Suitable for the following tire sizes: 3.00-21 80 / 100-21 90 / 100-21 90 / 90-21