New for 2007! One bar, 2 clamps and 4 K-Comp 6x9 speakers will fit better on your tower's header than four individual clamped speakers. The curved bar ensures the speakers will have clearance on your header and creates a clean uniform look. An underside LED on each speaker gives you just the light you need to wrap things up inside the boat after a long day on the water. Universal clamps fit tower sizes from 1-5/8" to 2 ½".