Left.inner. Lower cntrl arm bolt. Lower Inner. PartQualifier: inner. Right.inner. A circular device that has an offset hole to alow for Adjustment of alignment. A fastener used to secure a control Arm. A threaded rod with a drive head (such as hex, 12 point, torx, etc) on one end used to secure the Camber Adjustment Cam to a mounting point. Lateral Arm Bolt.