WakeMAKERS CamLOK P12 170 Portable Ballast Pump Adapter Kids The subwoofer grill is not The subwoofer grill is not included with the standalone purchase of a Wet Sounds Revo 12 High Power Subwoofer allowing you to customize your look with a variety of grill options from Wet Sounds try all three out and see which is your favorite since swapping out fins is a snap This is our new standard for connecting to our bags to our P12 170 Portable Ballast Pump (see recommended accessories) portable ballast pump for filling and draining Our CamLOK fitting makes it quick and easy to make a secure connection to your WakeMAKERS FIT Series ballast bag for effortless filling and draining