As the name implies, the Zip Focus only requires a single rod to secure to your camera rig. The short design of this follow focus works best with 15mm LWS configurations. A central joint allows for flexible pivoting to fit a wide range of lenses. The rubberized focus knob is textured for a sure grip. At the center of the knob is an ARRI-standard accessory port for attaching separately available accessories such as a whip or a crank. Use the included hard-stop disk with lenses that don't have hard stops, like many DSLR and mirrorless camera lenses, or if you want to physically limit your cine lens's focus rotation. Two standard replaceable marking disks are included as well. Users of photography lenses will appreciate the inclusion of a friction drive gear in addition to the 0.8 MOD drive gear for controlling lenses that don't have gearing. Gears can be secured to either side of the follow focus, providing flexibility in positioning where the follow focus can be tightened down, relative to other rig components. Use of them does not imply any affiliation with or endorsement by them.