From Manufacturer
The Proaim High-Low Boom Rig is a modular boom set for setting up your camera in difficult shooting positions at various heights. You can set up a low, side, or high boom rig by using the three included different-length tubes. A tool-free design allows quick assembly. The Boom Rig features tubes, offset adapters, and connectors. It supports up to 220 lb.
The three included aluminum tubes, measuring 12, 15.75, and 30" long, can be used individually or in combination, and you can adjust your camera along the height of the tubes. The tubes have an 80mm outside and 71mm inside diameter. The included offset adapters with double Euro-mount clamps allow quick and easy accessory mounting. Just attach standard or offset adapters and achieve a wide range of camera positions on various gear, such as jib arms, dollies, or cranes.