Trek-Tech MagMount AR/i Magnetic Quick-Release/Quick-Mount Ball Head Assembly with Anti-Rotation Feature Rare Earth Neodymium Magnet MagConnect system hold most large DSLR cameras and Optical Devices with no effect on Digital Storage Media. Safety Clip also mechanically attaches Camera or Optical Device securely in place. Comes with a Light Force MagAdaptor for lighter weigh devices and a Heavy Force MagAdaptor with Anti-Rotation feature for the bottom of your DSLR or Optical Device. Anti-Rotation feature allows locking camera in portrait orientation. Provides pan, tilt and swivel options and supports both portrait and landscape orientation.