The Silence Corner Magic Plate is a compact Arca-compatible camera plate with a hinge that can be used to quickly flip a camera into vertical mode (that's the magic.) Well made of metal, with a slim, lightweight design. Worth noting that this plate will work most "magically" with shorter Arca clamps, because the hinge needs clearance to pivot the camera into vertical position; if you have a longer clamp, you'll need to mount or move the Magic Plate close to the edge when you switch into vertical mode. A cool little accessory.