1.Pure copper material for better effect.2.High-grade plating, beautiful, , not easy to be scratched.3.The speaker shock base pad is used between spike and ground, to minimize the harmful vibration.4.Designed with a height fine tuning balance nut.5.Suitable for speaker, amplifier, CD DVD player, turntable recorder, Chassis, Instrument, etc.Item Type:Speaker Active ComponentsModel Number:FeetPad size: Diameter: 25mm, Thickness: 4mmSpike size: 36 * 6mmMaterial:coppercolour:GoldPackage Contents:16 * Base Pad16 * Foot nailOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.