Spin bike cycling now has more options. The dual sided pedals offer riders a multiuse pedal to accommodate different cycling shoes. Experience a more efficient energy transfer to pedals with the Shimano SPD pedal system with an easy clip-on design compatible with cleats. Alternatively, flip the pedal to lock in your everyday shoe with the adjustable straps and toe clip.GENERALAluminium Construction with CRMO (CNC) 14mm AxleHigh quality Sealed BearingsCompatible with SPDToe Cage Pedals with strap and buckle90 x 85mm SizingCOMPATIBILITYTo bike – Fits 9/16″ Threadded CranksTo Cleats/Shoes – SPD System