SunwayFoto Custom L Plate for Sony a6000 Camera PSL-A6000R Plate for Sony Alpha-6000 Camera Vertical plate is mounted to the horizontal plate with 2 x 3mm screws (allen wrench included). All metal construction. Aircraft grade aluminum. The horizontal plate (PS-a6000r) can be used on its own. SUNWAYFOTO brand Arca / RRS Lever Clamp compatible