Pure copper material for better effect. High- plating, beautiful, , not easy to be scratched. The speaker shock base pad is used between and ground, to minimize the harmful vibration. Designed with a height fine tuning balance nut. Suitable for speaker, amplifier, CD DVD player, turntable recorder, Chassis, Instrument, etc. Pad size: Diameter: 25mm, Thickness: 4mm size: 36 x 6mm Plating: Gold plating Suitable: Amplifier/CD DVD player/Turntable Recorder Type 1: speaker spikes Type 2: speaker stand Type 3: spikes for speaker color:Gold Material:copper Package Contents: 8 x speaker 8 x base pad Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.