Hole cover bolt. Left.2009-15. Right.2009-15. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Steering Wheel back Cover to it's mounting point. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Steering Wheel Trim to it's mounting point. A threaded rod with a drive head on one end used to secure the Steering Wheel Air Bag Inflator Module to its mounting point. Steering Wheel Bolt. Back. Driver Air Bag. Hole. Switch. Trim.