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Element hollow axle made of high tensile hardened steel. Compatible for MTB . You can convert the ordinary axle into quick release axle. Easy to use and install. Very useful and handy product for cyclist. You can remove the tyres without any tools.
      
    
 
            
            
            
            
             
           
          ![Shimano BUILT-IN TYPE Di2 BATTERY [SD300 TYPE]](https://unitedbycycling.com/cdn/shop/files/shimanoBT-DN300-di2battery_220x220.jpg?v=1735645011) 
          ![Shimano BUILT-IN TYPE Di2 BATTERY [SD300 TYPE]](https://unitedbycycling.com/cdn/shop/files/shimanoBT-DN300-di2battery-electronicshifting_220x220.jpg?v=1735645030) 
           
           
           
          
         
           
           
           
           
           
           
           
           
              