Description: - With high hardness and density has low harmonic vibration point and high damping - With Antiskid rubber absorbing vibration and achieve higher quanlity of listening pleasure, improve sound clarity, stereo imaging and bass response - CNC Machined and spring isolation stand feet is easier to install, no need to make holes and no need to use double-sided adhesive to avoid damaging your equipment. - Easy to adjust load bearing by moving or adding springs which can make sound feeling different - Suitable for speakers, amplifiers, instrument, turntable, CD/DVD players, recorders, DAC and other equipments Specification: - Material: Aluminum alloy - Feet Pads Diameter: 44mm/1.73 inches - Feet Pads Height: 38mm/1.5 inches - Load Bearing: 36 kg / 79 lb Package Includes: 4PCS Aluminum Spring Speakers Spikes Isolation Stand