Sirui TY-5DIIIL L-Bracket Plate for Canon 5D Mark III DSLR Camera with two Arca-Swiss compatible mounting options for setting up your camera either horizontally or vertically on a tripod. The L-Bracket Plate also features an opening on the side, enabling direct access to important cable ports. Additionally, the plate weighs only 3.2 ounces. It is constructed from a durable aluminum alloy and has non-slip rubber pads for additional security. For attaching the plate, there is a 1/4"-20 screw on the base that fits into the tripod socket of your camera.