The Universal Speaker Stands come with all the supplies needed to achieve the perfect placement of your speakers. It is designed with two base feet styles — plastic pads for solid surfaces and steel spikes to sit steadily on carpeted surfaces. The weighted base will reduce any sound vibrations, and the steel construction provides strength and durability. The stands are specifically compatible with the Sonos® One and Sonos® One SL Speakers, but also include all necessary attachment hardware to mount different speakers up to 22lb.