6-½" Marine Enclosure Each enclosure hold two 6-½" Marine Speakers weather-proof empty enclosures with slotted mounting holes for different bolt patterns Nine-degree axis rotation Legendary Kicker sound and power translates to the water, forests and mountains as well. Durable equipment designed specifically for your boat, motorcycle, off-road vehicle or utility vehicle makes your work or fun much more enjoyable. From the lakes and harbors to the rocky cliffs and desert sands, Kicker strives to keep you Livin' Loud in the elements.KMTED is for dual sets of drivers (4 total); speakers not included; tough ABS, weather-proof empty enclosures with slotted mounting holes for different bolt patterns; enclosures feature a nine-degree axis rotation in either direction for aiming max sound quality; aluminum tower-pipe clamps (2-5/8) with three adapter sizes (2-1/4, 2-3/8, 2-1/2); durable, stainless-steel push-type connectors; includes mounting hardware and polyfill; accepts all KICKER 6-1/2-inch component speakers, coaxials and horns