SunwayFoto PC-7DIIR Quick-Release Plate for Canon 7DII Camera PC-7DIIR QR plate for Canon EOS-7DII Dovetail Width: 39mm Precision CNC machined from solid aircraft-grade aluminum. SUNWAYFOTO brand Arca-Swiss / RRS Lever Clamp compatible Includes 2 safety stop screws, 1 x 1/4" screw and allen wrenches.