This pair of Titanium Marine-Grade 8 in. 750-Watt Wake Tower Speakers from Power Acoustik are housed in 100% waterproof enclosures. The speaker system is made of high-density ABS construction with UV coating. The steel-reinforced mounting bracket fits most towers. The speaker cones are polypropylene and the tweeters are titanium. Terminals are quick-disconnect compression type. A braided stainless steel safety cable and stainless steel mounting hardware are included. This system is ideal for marine as well as off-road atv, utv, and golf cart usage.