JL Audio 8.8″ Marine M6 Series Boat Speaker Spacer Rings King Starboard Don’t have enough depth to install your speaker/subwoofer? Problem solved these spacer rings give you that extra space needed to mount your speaker/subwoofer. What your getting and how to order 1 PAIR Frame Outer Diameter          8.80 in / 224 mm Bolt Hole Circle Diameter  7.97 in / 202 mm Mounting Hole Diameter  7.375 in / 187 mm Fits  M6-880X-C-GwGw: 8.8-inch M6-880X-S-GwGw: 8.8-inch M6-880X-S-GmTi: 8.8-inch M6-880X-C-GwGw-i: 8.8-inch M6-880X-S-GmTi-i: 8.8-inch M6-880X-S-GwGw-i: 8.8-inch -Select your quantity -Select your thickness (1/4,1/2,3/4) -Select your edge profile (Straight, 1/8 Round, 1/4 Round) -These are made with the best Starboard on the market King Plastics not that other cheap stuff -These are made the exact same way as all the other spacer rings you may see out there -These are made with the same type of machines as all the others you see out there -We have been working with King Starboard for a very long time and we take pride in what we do Don’t see a size you need? Contact us and we would be more then happy to get you what you need, we make spacers for all brands and sizes.