SUNWAYFOTO PCL-6D L Plate for Canon EOS 6D Camera Arca Compatible Sunway PCL-6D L plate for Canon 6D Mark III Camera Image plane mark on both horizontal and vertical rails. Precision CNC machined from solid aircraft-grade aluminum. SUNWAYFOTO brand Arca-Swiss compatible 5. Includes 4 safety stop screws, 1 x 1/4" screw and 2 allen wrenches.