The of using isolation spikes is to suspend the acoustic feedback of the speaker or subwoofer. They can be installed to protect the turntable, CD player, amplifier or other audio components from vibration. Therefore, the tone will be more concentrated and , and less noise will be transmitted from the floor to other rooms. With the help of adhesives, spikes can be attached to the chassis without drilling holes. Suitable for speakers, CD players, DACs, turntables, amplifiers, DAC recorders, etc. size:45x45x33mm :Aluminum colour:Black Package Contents: 4 x Speaker isolation pad Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.