The aluminum alloy is oxidized, which is waterproof and does not fade; the aluminum alloy and the spring are integrated into one body. The aluminum alloy itself eliminates part of the sound vibration, and the intransigent transition to the spring is eliminated. Both HiFi and music are taken into account to make the performance transient The reflection is more outstanding, making the music more energetic and not procrastinating; the low frequency is full and not turbid, the middle frequency is , the high frequency penetrates effectively, each part is clear, and the sense of depth is strong. Product Name: Aluminum alloy integrated spring foot pad Process: CNC lathe system Size: Diameter 44MM Height: 38MM [Application]Aluminum spring speaker, spike, audio isolation foot pad, stand, very suitable for high-fidelity amplifier/speaker/turntable/player, suitable for record player/subwoofer/turntable/amplifier/speaker/recorder and other high-fidelity equipment Colour:black Material:Aluminum Alloy Package Contents: 4 * HiFi Audio Foot 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.