1,Non‑slip rubber of this isolation feet pad can absorb vibration and improve sound clarity.The low sound design and stereo imaging can get better listening pleasure. 2,Aluminum alloy material has high hardness, high density, low harmonic vibration point and high damping, which can avoids most of the vibrations that might interfere with downstairs. 3,Use this audio isolation feet mat to suspend the acoustic feedback of speakers to reduce vibration. The sound will be more concentrated, lighter and less noisy. 4,CNC machining and spring isolation bracket feet are easy to install, no need to punch holes, and no need to use double‑sided adhesives to avoid damage. 5,Seven removable stainless steel springs, which can effectively reduce vibration, increase the energy of low and medium frequencies while maintaining the original rich details. 4 x Isolation Feet Pad Item Type: Isolation Feet PadModel: SP4540ABase Material: Aluminum Alloy and RubberSpring Material: 304 Stainless SteelDiameter: Approx. 44.5mm or 1.8inHeight: Approx. 40mm or 1.6in (No Load Bearing)Load-bearing Range: Within 35kg or 77.2lbScope of Application: Speakers, Amplifiers, Musical Instruments, Turntables, CD or DVDPlayers, Recorders, DAC and Other Equipment Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.