[doctorcilantro]

With lightning-fast response, this very firm yet loosely structured material is formulated specifically for blocking mechanical soundwave energies. Wide footprint gets a good grip and provides excellent lateral stability. Each Big Fat Dot supports and isolates from five to more than 200 pounds (90kg).
Big Fat Dot is 1-5/16" (33.3mm) diameter by 9/32" (7.2mm) thick. Perfect for floor-standing speakers, monitors, loudspeaker and stand decoupling, module decoupling, subwoofers, electrostatics, amplifier platforms, equipment racks.

( for $55 shipped - perfect for bookshelf speakers imo. One set has sticky side used but still sticky - note: each sticky fat dot has double-side sticky to be used (one quad shown in pic).