Gimbal Head Benro GH-2 head is a specialized tripod head for heavy telephoto lenses. it allows you to rotate your lens around its center of gravity and thus easily manipulate very large lenses. What's more,it's faster and more stable than the traditional ball head, realized the function of using the lens from all different side and that's completely adjustable. The lens is set flat when using GH-2 . GH-2 is compatible with international-style QR system, and Benro PL Series special lens plate would be your best choice.