Complete 2 speaker foam surround installation kit This kit is made specifically for the black-coned JBL 128H-1 woofers found in the 120Ti, 4412 and 4412A cabinets. This kit does NOT fit white-coned JBL woofers. Same surrounds that professional reconers use; NOT cheap Chinese imitations! Kit includes THE BEST QUALITY foam available. 2 Premium American-made 12" Foam Surrounds (Enough for 2 Speakers) 2 Paper dust caps - 3.25" Step-by-step installation instructions 1 Bottle of premium professional-grade adhesive (Nitrile rubber) 1 Bottle of premium dust cap adhesive 1 Adhesive application brush Voice coil shims Foam Dimensions------ Kit 2JBL128H1-Comp Outer Diameter 11.5" - 292mm Outer Roll Diameter 10.5" - 267mm Cone Diameter 9.375" - 238mm Inner Diameter 9" - 229mm Roll Width 9/16" - 14mm Inner Attachment Angled