The DPL-02R Universal L-Bracket from Sunwayfoto is an Arca-type and RRS lever compatible quick-release bracket that enables fast changes between portrait and landscape orientation - without the need to readjust your head and completely recompose the shot. Because there are dovetail grooves on both the horizontal and vertical elements, you can simply release the bracket from your Arca-style quick-release clamp, tilt it 90°, and lock the bracket back in place.
CNC machined from aluminum, the DPL-02R features an adjustable slide mounting plate design, which allows precise placement and adjustment within the specified range. The range for this plate is 1.6 to 2.5" from the screw hole to the vertical side of the plate. The plate can be adjusted continuously in that range. To keep the camera from twisting, there's a flange on one side.