Sevenoak Fiber Gimbal Head Adpater SK-GH04 is a carbon fiber gimbal head adapter designed for large telephoto lenses and DSLR cameras. It is ideal for photography involving long, heavy telephoto lenses in sports or nature photography, for instance. Working with a long lens on a standard hall head or tilt head can be a real struggle, distracting you from the photography. The gimbal head adapter makes the camera and lens seem almost weightless, with vertical and horizontal tracking of moving objects becoming relatively simple feat not possible with any other support system. An Arca-Swiss-compatible quick release plate is included. And it fits with Arca-Swiss-compatible QR clamp on a heavy-duty ball head.