Left.REG & QUAD CAB. Rear dr speaker screw. Right.REG & QUAD CAB. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Rocker Panel Reinforcement to it's mounting point. Door Interior Trim Panel Screw. Speaker Screw. Interior. Rocker Reinforcement Bolt. Sill cover fastener. Included with: Front and rear Door Speakers.