Fox Shox Shock Mount Hardware with Crush Washer. Features: Mounting spacers with crush washer for one end of a shock May also include other washers, o-rings, and other parts 1/2" (industry standard) hardware is also compatible with other rear shock brands Sized by bolt diameter (M6, M8, M10) and frame mount-ID width (in mm) Specifications: Bolt Size: M6 Frame Mount: 20.83mm (0.820") Material: Aluminum