Complete 2 speaker foam surround installation kitSome of the models that use this angle-attach foam include : Marantz 400, 900, 841-2047-000, DMS-250, DM250, HD-660, HD660, LS-88H, M-2, M2, LS88H, P-1030, P1030, PRESTIGE 1030, S-99, S99 and others that match the measurements shown Same American-made surrounds that we use in our professional repair facility; NOT cheap Chinese copies!! Kit includes: - 2 Premium American-made Foam Surrounds (Enough for 2 Speakers)- Step-by-step installation instructions - (Also see video below)- 1 Bottle of premium professional-grade adhesive (Solvent-based)- 1 Adhesive application brush Kit 2A10-Marantz Outer Diameter 9.75" - 248mm Outer Roll Diameter 8.875" - 225mm Cone Diameter 7.75" - 197mm Inner Diameter 7" - 178mm Roll Width 5/8" - 16mm Inner Attachment Angled How To Center Your Voice Coil Using Smartphone or Tablet