GC-01 58mm Panoramic Arca Swiss Geared Clamp, BlackGC 01 is one gear drive 360 degrees panoramic clamp, it provides with quick release adjustment as well as exquisite fine tune, ideal for professional architectural photographers etc.. This clamp will effectively increase the efficiency of photo composition as well as splicing afterwards. Working with geared head to carry out 3D full gear drive adjustment. All metal main body structure, gear made of copper for better hand grip and stability, others are