The Pearstone 11" Articulating Arm is used to mount small displays on prosumer and professional camcorders. The arm's unique design features a single-point locking mechanism, which gives the user maximum flexibility. Moving the display on multiple axes is quick and easy, allowing users to find the best possible viewing angle. In addition, the bottom vertical spacer piece is removable to reveal a 1/4"-20 male screw, and the bottom shoe mount is removable to reveal a 1/4"-20 female thread.
 
https://www.bhphotovideo.com/c/product/616251-REG/Pearstone_9041660_9041670_8_3_21_1cm_Articulating.html/overview