12" Pro-Grade Speaker/Subwoofer Chip Gaskets-adhesive included 2 Premium 12" Chip gaskets (Enough for 2 Speakers) Each gasket comes as a 1 piece round 1/4" Thick - Fits ALL 12" speaker frames with 8 mounting holes Includes 1 bottle of our professional-grade nitrile rubber adhesive (The BEST available) FREE phone support and FREE shipping within the U.S.