Ensure that your oil shock dampers are in tip-top condition by maintaining the O-rings fresh and changing out older ones that have skilled a drop in performance. These 30° O-rings assist provide great initial response. • O-Rings x8 • High-spec elements reduce the total amount of atmosphere which gets forced into the dampers whilst the model is running, keeping your dampers doing at a higher level for longer. • Navy blue color. • Compatible with shock sets: Things 42353, 42354, 42355