Item DescriptionFor mounting 1 end of DT Swiss SSD series rear shock to frameStepped spacers provide a solid mount interface with frame (larger widths thread together with center sleeve)Sized by bolt diameter (M6 or M8) and frame mount-ID width (in mm)2 hardware kits required per shock, 1 per each eyeletItem Specificationsbolt size: M8frame mount: 33.9mm: