Description: of using Carbon Fiber Isolation Feet to suspend acoustic feedback from your speakers or sub-woofer isolation for vibration. Also can be installed to turntable deck, amplifier ,CD, DVD player and other audio components from vibration.Therefore, the tones will be more focused and tighter. And, there will be much less noise to be transferred to other rooms from the floor. sound quality at low costsize: 40 x 10mmMaterial: carbon fibrecolour: blackPackage Contents:1 x Spikes Base PadOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.