All metal structure, hard anodizing, with better resistance and wear resistance. The 90 degree panoramic rotation base allows for easy adjustment of camera orientation. Double pointers on both side of the guide for accurate reading. The unique 4-pin detachable designing is convenient for use on the desktop and can be easily stored in the internal magnetic compartment. 3/8" screw hole in the center of the bottom, which can directly install a tripod and is very suitable for macro photography.