Features 1.ALUMINUM ALLOY: Speaker isolation feet mats are made of aluminum alloy with high stiffness and density, featuring low harmonic vibration points and high damping. 2.TRI BAND EQUALIZER: Speaker isolation feet pads maintain the sense of low volume, enhance the line and texture of high frequencies, and extend wider at both ends. Three band equalizer. 3.LESS NOISE: Speaker isolation feet mats are designed to suspend acoustic feedback from the speaker or subwoofer to isolate vibrations. The sound is more focused, lighter and less noisy. 4.EASY TO INSTALL: Amplifier isolation feet pads are easier to install without the need for perforations, which can avoid most of the vibrations that would destroy the substrate. 5.WIDE RANGE OF APPLICATIONS: Speaker spike isolation feet pad is suitable for speakers, amplifiers, meters, turntables, CD DVD players, recorders, DACs and other devices. specificationItem Type: Speaker Isolation Feet Pads Model: SP2724 Material: Aluminum Alloy Quantity: 4 Sets (4 Foot Spikes, 4 Foot Pads) Foot Spike Height: Approx. 20mm/0.79in Foot Spike Diameter: Approx. 24mm/0.94in Foot Pad Diameter: Approx. 23mm/0.91in Foot Pad Height: Approx. 4mm/0.16in Suitable: Speakers, Amplifiers, Meters, Turntables, CD DVD Players, Recorders, DAC And Other Equipment PackageList4 x Foot Pads 4 x Foot Spikes NotePlease allow some error due to manual measurement.