These -crafted and attractive little devices are useful for a variety of applications. Placed under the can be fitted to floor-standing loudspeakers, they can hardwood or tile floors from being scratched and damaged, while simultaneously allowing the to decouple the speaker cabinet from the floor, improving overall sound quality. Especially designed for carpeted floors, where penetrating the weave of and reaching the plywood subfloor, also contribute to improved sound quality on other surfaces, too by keeping any cabinet resonance from "exciting" the floor and creating a "boomy" sound. Function: Using isolation is to suspend acoustic feedback from your speakers. can be installed to separate your players, amplifier or other audio components from vibration.The tones will be more focused. And less noise. Application: Set up the under the equipment . No drill is needed. No adhesive substance is recommended, as it may influence the isolating effect. Screw to adjust the make better contacted. material promises high gravity (density) Product diameter: 28mm Color: gold Material: Copper Package Contents: 8 x Speaker 8 x 16 x stickers Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.