Up for sale is Black Hole 5 cabinet insulation pads. These are unused. They are designed to be installed in speakers to improve and dampen vibration. I have a box of 12 I'll let go for $100 plus shipping from Stone Mountain, GA 30087. Speaker city sells them for $27.50 each so this is a great deaL. Please see my great feed back on Audiogon under username neilwill. Thanks for looking.