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. 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, and you'll have a double-quick-release plate that you can attach to your camera. You'll then be able to switch quickly between operating your camera on a head & tripod and carrying it on a vest or side holster system from Cotton Carrier. Note! For compatibility with longer plates such as those used with video heads, or for Manfrotto RC2 plates, you will also need a 733QRS Quick-Release Clamp (with spacer). Cotton Carrier Camera Hub and quick-release plate with 1/4"-20 screw also sold separately.