The Electro-Voice EBK-1 Eyebolt Attachment Kit contains three shoulder eyebolts along with three fender washers for load distribution which attach to Electro-Voice speakers that have integrated ?" suspension points. The eyebolt attachment points can be used to suspend the Electro-Voice speakers using hardware rated for overhead lifting. The loudspeaker is suspended using two main suspension points with a pull-up point in the back for aiming. Two suspension points can be used to prevent the speaker from swaying but the rigging hardware (shackles etc.) attaching to the eyebolt must fit through the 25-mm (1-in.) opening.