JL Marine Audio M770 MX770 Color Changing LED RGB Speaker Light Speaker Ring Our Rings have PRE-DRILLED holes, made to fit screw points of JL 7.7" Marine Speakers Models, M770 and MX770. Avoiding cracking and breaking of drilling them yourself. Also, our rings are COLOR CHANGING. Not just white, blue, green or red, but EVERY color in between ( when installed using a controller) These rings are made with high quality WATERPROOF SMD LEDs. Designed to fit the JL 7.7" Marine Speakers Models, M770 and MX770.