Feature 1 Spring spikes can affect the acoustic feedback of the speaker to reduce vibration. The sound is more concentrated, there is less noise, and the relationship between neighbors is more harmonious. 2 Aluminum alloy has the characteristics of low harmonic vibration point and high damping; rubber can absorb vibration. Let you have more fun of listening to music. 3 The specially processed Spring spikes are easy to install and will not damage the equipment. Moving or adding springs can make the sound feel different, making it easier for you to adjust the load. 4 It has high attenuation characteristics, can keep the sense of less lining, and improve the sense of highfrequency line and the sense of plainness in the design, so that it has better performance. 5 With the great workmanship, it can be a perfect replacement for the old or damaged one. Professional design and reasonable structure make it easy to replace and install.Item Type: Spring Speaker SpikesProduct Model: SP4055Base Material: Aluminum Alloy + RubberSpring Material: 304 Stainless SteelDiameter: Approx. 4.4cm/1.7inHeight: Approx. 3.8cm/1.5inApplication: Speakers/Amplifiers/Musical Instruments/Turntables/CD Players/DVD Players/Recorders/DAC and other Equipment. Package List4 x Spring Speaker Spikes