RockShox rear shock mounting hardware. 3-piece design hardware for mounting 2008+ RockShox Vivid, Kage, Monarch and 2010+ Ario rear shocks with 1/2-inch (12.7 mm) eyelet dimensions. 1/2-inch (industry standard) hardware is also used on and cross-compatible with, Marzocchi, Cane Creek, Fox and Progressive rear shocks. 2 hardware kits required per shock: 1 for each eyelet. Bolt size: M6. 16 mm frame mount.