Features: Enhances your sound experience with aluminum alloy speakers spikes featuring rubber vibrations isolators that reduce resonance, improve sound clarities, and offer easy, toolless installation for superior stability. from machined aluminum alloy, these spikes include elastic rubber pad with anti slip textures, standard screw holes for quick mounting, and multiple size option to ensures durability and surfaces protections. for audiophiles and home theater owners with bookshelf speakers, floor standing sound systems, amplifiers, or players who seek vibrations reduction and equipment safety. for use in living room, studios, or offices where sound devices require secure placement on desks or surfaces to minimize noise and prevent scratches during operations. Optimize your setups with sound equipment accessories that provide adjustable height and size choices, delivering perfect blend of performances enhancement and aesthetic appeal for any home entertainment systems. Specifications: Materials: aluminum alloy + silicone shock-absorbing rubber rings Size: 19.5x11mm, 30x16mm, 38x21mm(optional) Color: Silver, Black(optional) Package Includes: 4Pcs speakers Spikes Stand Feet Pad note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.