Complete 2 speaker foam surround installation kit.Some of the models that use this foam include :B & O, Bang & Olufsen Redline, Red Line, RL-140, RL 140, X25, 8480186, 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 2A65-BO Outer Diameter 6" - 152mm Outer Roll Diameter 5.5" - 140mm Cone Diameter 4.625" - 117mm Inner Diameter 4.25" - 108mm Roll Width 3/8" - 9mm Inner Attachment Angled How To Center Your Voice Coil Using Smartphone or Tablet