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Tube
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26X1.75/2.20
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Designed for MTB-26"
 
Tube AUTHOR 26x1.75-2.20  100% all butyl rubber made with extremely air-tight. Keep air pressure in bicycle tyre longer than cheaper tubes made of syntehtic rubber. 
American valve 32 mm.
Less air loss = having to inflate less.
100% quality control, each AUTHOR tube is individually examined at the factory to ensue air-tightness.
ETRTO 47/55-559.
                            
                                      
