Materials: 1.aluminum alloy: with high hardness and density, it has a low harmonic vibration point and high damping; Anti-slip rubber 2.vibration absorption and achieve a higher quality of listening pleasure, improve sound clarity. stereo image and low response design: CNC machined and foot isolation brackets is easier to install, No need to drill holes or use double sided adhesive to avoid damaging your equipment. Especially, it is convenient to adjust the load bearing by moving it or adding springs that can make the sound feel different function: using stands for foot isolation is to suspend the acoustic feedback of your speakers or subwoofer isolation for vibration. The tones be more focused, lighter and with less noise. It can also avoid much of the vibration that can disturb you downstairs. Advantages: It has high attenuation characteristics that can maintain a low amount sense and increase the sense of high frequency line and simple sense. Applicable objects: speakers, amplifiers, instruments, turntables, CD / DVD players, recorders, DACs and other equipment The loading capacity of each is 7.5KG colour: black Material: Aluminum Alloy size: diameter 44mm high 38mm Package Contents: 4 x amplifier foot 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.