Perfect fit for Nikon D3, D3s, D3x, D4 and D4sThis quick release plate from SIRUI was specially made for the Nikon D3/D3s/D3x/D4 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" 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.