The Zonitor Handheld Kit attaches a 1/4 20 accessory (usually a monitor) to a 15mm rod via an articulating arm. You can mount any device with a 1/4 20 (or 3/8 16 with 1/4 20 to 3/8 16 adapter) screw hole, such as an external on-board monitor, lights, and/or hard drives. The ZicroMicro stays on your accessory - the L prongs will stop it from spinning - and the Zwivel 2 (15mm) stays on the rod. The 12" articulating arm connects the two via a quick release on both mounts. No screwdrivers or unwinding necessary!