Description:brand new and high quality. Feature:Brand new solid aluminum speaker amplifier isolation feetSuitable for speaker,amplifier,instrument,equipment,turntable,CD-DVD player,DAC etc. Specifications:Material: Solid aluminumCNC MachinedColor: Silver, Black, GoldSurface finish: Anodized,sand blastingDiameter: 40mmHeight: 20mmMounting screw hole diameter: 4.5mmWith removable non-slip rubber ring Note:Transition: 1cm=10mm=0.39inchPlease 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 Includes:Quantity: 4PCS/lot