Mount between camera and Stroboframe bracket camera platform to prevent camera from twisting.Cameras mounted to flash brackets of any brand, including ours tend to twist or rotate on the camera mounting screw. Cork or rubber friction pads help, but the real solution is to use a camera-specific Anti-Twist (AT) Plate. They act as an interface between the camera and bracket, pin-register to the bracket and conform to the camera's baseplate. This locks the camera to the bracket to prevent twisting. Because there are so many camera configurations, AT Plates are sold separately. Also, because our Anti-Twist Plates are interchangeable, your bracket will never become obsolete when you buy different equipment!Note: Camera Anti-Twist Plates are not compatible with QuickFlip models.When using Pro-T or Press-T model brackets with heavier flash units, consider the use of a Camera Anti-Twist Plate mandatory.