The JConcepts Fin Aluminum 12mm Shock Collars have a knurled exterior for extra grip and quick pre-load adjustments and are the perfect upgrade for your Team Associated V2 shocks. A notch has been added for position identification and allowing easy track-side ride height changes. The precise collar accepts the same inner o-ring as the kit standard and with a tiny drop of oil on the o-ring and is easily adjustable from any position. Package includes two shock collars. 2pcs