Feature: Can be used for HiFi speakers or speaker frame It can be put under the speaker, or under the shock board and anti-shock frame It's end point to the ground, can minimize the harmful vibration Can eliminate the pollution between the ground and the speaker, get the sound effect Appearance is absolutly classic and high profile Specification Model Number: M23*20 Total length of the Nail: 20mm Foot pad diameter: 23mm Foot pad height: 4mm Product height(Nail and pad): 23mm Material: Aluminum alloy colour: Black Package Contents: 8 x Speaker Spikes 8 x base Only the above package content, other products are not included. Note: Light reflection 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.