brand new and high quality Materials: Aluminum alloy: with high hardness and density has low harmonic vibration point and high damping; Antiskid rubber: absorbing vibration and achieve higher quanlity of listening pleasure, improve sound clarity, stereo imaging and response Design: 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. Espeically it's convenient for you to adjust load bearing by moving or adding springs which can make sound feeling different Function: Using isolation stand feet is to suspend acoustic feedback from your speakers or sub-woofer isolation for vibration. The tones will be more focused, lighter and with less noise. It can also avoid much of the vibration that may disturb downstairs. Advantages: it has high attenuation characteristics which can keep low quantity sense and raise high frequency line feeling and simple sense. Applicable objects: speakers, amplifiers, instrument, turntable, CD-DVD players, recorders, DAC and other equipments Diameter:44mm Hight:38mm Material:Aluminum alloy Colour :Silver or Black The weight load capacity of each is 7.5KG Qty:4Pcs/Box Black/silver (optional) Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls 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 Package Include: 4 x foot pads