①. Materials: Aluminum alloy: with high hardness and density, low harmonic vibration point and high damping; Antiskid rubber: absorbing vibration, which may contribute to listening experience, sound clarity, stereo imaging and response. ②. Design: CNC Machined and spring isolation stand feet, easier to install, no need to make holes and no need to use double-sided adhesive, which may help avoid damaging equipment. It is convenient to adjust load bearing by moving or adding springs, which may result in different sound feeling. ③. Function: Using isolation stand feet is to suspend acoustic feedback from speakers or sub-woofer for vibration isolation. The tones may be more focused, lighter and with less noise. It may also help reduce vibration that may disturb downstairs. ④. Advantages: It has high attenuation characteristics, which may help keep low quantity sense and raise high frequency line feeling and simple sense. ⑤. Applicable objects: Speakers, amplifiers, instrument, turntable, CD-DVD players, recorders, DAC and other equipments. ⑥. Specifications: Diameter: 44mm; Height: 38mm; Material: Aluminum alloy; Colour: Silver or Black; Weight load capacity of each: 7.5KG; Qty: 4Pcs/Box; Black/silver (optional). ⑦. Note: No retail package. Transition: 1cm=10mm=0.39inch. Please allow 0-1cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you. ⑧. Package Include: 4 x foot pads.