The PZ-155 Camera Plate from Kirk is a quick-release plate designed specifically for use with the Nikon D7100 DSLR camera. It fits Arca-Swiss-style quick-release clamps to enable a quick release from a tripod head. The plate features a 1/4"-20 stainless steel allen screw and an adjacent 1/4"-20 socket. By attaching the optional LBS-D7100 L-Bracket Side to make an L-Bracket, you can switch from portrait to landscape orientation and vice-versa with your D7100--without the need to tilt your ball head and re-level the shot. The side of the plate features a sensor-centering line to help you properly align your camera. The PZ-155 plate is machined in the U.S.A. from lightweight 6061T6 aluminum alloy and includes an allen wrench.