size: about 39 x 17mm Material: Aluminum alloy colour: Black Package Contents: 4 x speaker spikes 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. Multi-device compatibility, works with speakers, amplifiers, musical instruments, turntables, CD/DVD players, recorders, DACs and other devices for a better listening experience. The CNC machined design of these isolation stand feet makes it easier to install without drilling holes or using double-sided tape to avoid damaging your device. Isolation feet are designed for use with speakers, amplifiers, musical instruments, turntables, CD/DVD players, recorders, DACs and other equipment. Reduce vibration and resonance, HiFi Speaker Isolation Feet Shock Absorbing Pads foot design can absorb up to 94% of vibration and resonance, providing an effective solution for optimizing the true sound of stereo equipment. Made of high-quality material, it is , non-fading and not easy to oxidize, ensuring long-term use without loss of quality. Non-slip rubber on the isolation feet helps absorb vibrations for higher quality listening pleasure, improving sound clarity, stereo imaging and bass response.