Features: Full CNC aviation aluminum alloy precision carving, high-quality silicone shock-absorbing ball. Shock absorption system, an shock absorption system can reduce the occurrence of resonance, can improve the sound quality, and bring more quiet and pleasant audio-visual enjoyment. The anodized surface is clean not simple. The bottom non- and scratch-resistant ,design is durable. Supports for SoundX, for Xiaoai Speaker, for , etc. size: 139 x 13.5mm Material: aluminum alloy colour: silver Package Contents: 1 x Anti Vibration Speaker 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.