Exclusive spike in knurl design incl. floor plate. Its specific design prevents scratches on the floor and allows for uncomplicated repositioning of the speaker. Further, the transmission of mechanical vibration to the floor is avoided, which leads to less noise in the nursery and bedrooms, as well as an increased separation of lower frequencies. Model: anodised black Suitable for the models AYERS Three, Four, Five, Sub and the stands for AYERS One and Two