The purpose of using isolation spikes is to suspend acoustic feedback from your speakers, subwoofers. They can be installed to separate your turntable deck, CD player, amplifier or other audio components from vibration. Therefore, the tones will be more focused and tighter. And, there will be much less noise to be transferred to other rooms from the floor. 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 pure natural sound effect Appearance is absolutly classic and high profile Specification Model Number: M23*20 Material: Aluminium alloy (Brass on tiptoe Total length of the Nail: 20mm Foot pad diameter: 23mm Foot pad height: 4mm Product height(Nail and pad): 23mm Color:black silvergold Net weight: 1 sets about 17g (1 Feet =13g, 1 Pad=4g). Note: Please allow minor deviation due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.