Cotton Carrier Universal Hubless Adapter Plate ikan each with its own level Bundle:With Battery and SKB Case each with its own level control each disc looks and feels like a 45 rpm record Attach your video or photo head's quick release plate to the to the Universal Hubless Adapter Plate via its standard 1 4" 20 thread and your Camera Hub to the adapter using the included Allen key & screw The Cotton Carrier Universal Hubless Adapter Plate lets you combine a quick release plate – for mounting your camera on a tripod & head – with your existing Cotton Carrier quick release Camera Hub that fits the receivers found on the manufacturer's vests and holsters