The Kupo KG604312 3-Axis Camera Mounting Plate Kit is designed for mounting a camera on a pipe or truss 48-51mm in diameter. Features three couplers - two couplers with a 5.5in (14cm) long 2in pipe, and the other coupler with a camera mounting plate which allows for greater flexibility in positioning the camera. Perfect for mounting on a pipe boom rig or truss for overhead filming. Constructed from lightweight and solid aluminum alloy.