Perfect fit for Canon EOS 5D Mark IIThis quick release plate from SIRUI was specially made for the Canon EOS 5D Mark II and fits perfectly to the camera. The individual shape of the plate additionally stabilizes the camera when tilted or when shooting in portrait format. It has a 1/4 inch standard threaded screw.Another feature is the slot on the edge of the plate. A strap or hand strap can be attached to it.The SIRUI interchangeable plates are compatible with the Arca-Swiss quick release system.The SIRUI TY-5D Mark II quick release plate only fits the Canon EOS 5D Mark II.