Audio Designs & Custom Graphics machines the Ford F150 Speaker Adapters on our in house CNC machine. This ensures a perfect fit EVERY time. This is a complete set that includes tweeter, front door, and door adapters. By bringing the speaker out and adding a FAST Ring, it seals the speaker to the back side of the door to force all the acoustic energy directly out of the door panel and does not trap it between the door panel and door. Sealing it up significantly increases your midbass response and increases the sound quality of the speaker as a whole.