Pure copper material for better effect. Highgrade plating, beautiful, bright, not easy to be scratched. The speaker shock base pad is used between spike and ground, and plays a important role in protection. These are universal base pads, suitable for all spike feet. Suitable for speaker, amplifier, CD DVD player, turntable recorder, Chassis, Instrument, etc.Specifications Color Gold, Silver, Guncolor (Optional) Size Diameter 25mm, Thickness 4mm Plating Gold plating, nickel plating, Guncolor plating Material Copper Package weight Approx. 124gPackage List 8 x Base Pad