SUNWAYFOTO® brand Arca-Swiss compatible. PNL-D800 L plate for Nikon D800, D800E cameras. Precision CNC machined from solid aircraft-grade aluminum. Mounting screw: 1/4-20″. Dovetail Width: 39mm. Upper Width: 60.49mm . Height: 83.5mm. Weight: 82g. Length 114.5mm. All metal construction. Includes 1/4" screw & allen wrench