Fits:  JL audio M6-770X, M-770 and MX-770 speaker.
What you get: Two Spacer rings with the specs below
Outside diameter 7.70''
Mounting hole diameter 6.25''
Bolt hole diameter 6.92''
Thickness .75''
White King Starboard
 
If you need a different size please let us know, we can make these spacers in ANY SIZE! 
We can also make these in clear plexiglass so you can use them as a lighted speaker ring!