FOTGA DP3000 M1 Pro Matte Box Sunshade + Donuts for 15mm Rod Rig Follow Focus DSLR Canon Mark 5D II III 7D Cameras etc. Universal design for all camcorders and DSLRs & Industry standard 15mm supporting rods, center-to-center rails distance 60mm The kit includes one French flag, and two adjustable side wings. Each of the three flaps can be positioned and locked in place so as to suit different focal lengths by providing the maximum amount of shading without getting in the way of the shot With height adjustment feature so that the height of the Matte Box can be adjusted as per the the height of the camera lens. You can Adjust the height up to 45mm A set of 4 donut rings are included.(Size at 103mm,76mm,64mm,51mm).By fitting one of these rings, light from the rear of the matte box can be blocked out, leaving only the camera lens protruding through. Donuts are slightly flexible, and the four sizes range to fit almost any lens diameter Material: Made of Metal and Plastic