The elbow Tac-Tic was designed to give the same type of feedback to a player who breaks down at the elbow. When you watch the more powerful and consistent players on tour, it is evident that they keep their lead arm fully extended during the backswing and throughout the impact position. Simply put, the wider the arc of the arm swing, the more power generated through the clubhead. Many players have tried to keep their lead arm extended during their swing, but fail because they cannot feel the arc, unaware of a break down at the elbow. When a player swings with the ELBOW Tac-Tic on the lead arm, they are made aware of a break down in the elbow by the sound of a "click". By practicing with the ELBOW Tac-Tic, a player is given the feedback necessary to help them keep their lead arm extended. You can hear and feel it.