This custom tool makes adjusting th OE camber cams on the rear of Audis a snap. Even with tires on and the suspension loaded you will be able to access and tighten the nut. Simply loosen the cam bolt, adjust the camber bolt with the bolt's hex pilot, then hold it in place with the hex while you tighten the nut with SPC's custom 12 point box end wrench. The 87570 tool is angled to allow maximum access and clearance for rear camber adjustment. California Residents WARNING