Specification: Features:_x000D__x000D_Pure copper material for better effect. _x000D_High-grade plating, beautiful, bright, not easy to be scratched. _x000D_The speaker shock base pad is used between spike and ground, to minimize the harmful vibration. _x000D_Can be used for HiFi speaker and speaker stand to avoid vibration. _x000D_Especially suitable for heavy speaker due its pudgy body design. _x000D__x000D_Specifications:_x000D_Color: Shown as the pictures_x000D_Size: Outer diameter: 18mm, Height: 20mm; Screw diameter: 8mm_x000D_Plating: Primary color_x000D_Material: Copper_x000D_Package weight: Approx. 180g_x000D__x000D_Package List:_x000D_8 x Spike Features: 1Pure copper material for better effect. 2High-grade plating, beautiful, bright, not easy to be scratched. 3The speaker shock base pad is used between spike and ground, to minimize the harmful vibration. 4Can be used for HiFi speaker and speaker stand to avoid vibration. 5Especially suitable for heavy speaker due its pudgy body design. PackageList: