The Manfrotto 300N Panoramic Rotation Unit is one of the perfect solutions, for photographers to achieve brilliant 360 panoramic shots by taking sequential shots around a single axis. The unit is an essential part of achieving accurate and easy to stitch panoramic compositions. A Click-Stop selector screw is included to make angle selection easier thats attached to a safety cable to avoid it from getting lost, and with a secondary locking screw included it prevents unwanted or accidental rotation of the head when heavy photographic equipment is mounted.