UFF-1 Universal Follow Focus is the first follow focus to be compatible with 15mm LW, 15mm Studio and 19mm rods without the use of adapters. Simply unlock the clamps and slide to the appropriate rod position. Notches in the bottom of the bridge indicate when the clamp is in the correct position. The included swing arm and lens gears can be flipped to the front or back position which is helpful for compact lens configuration and the bridge has the lowest height in the industry so it will work with larger zoom lens barrels. The hand wheel is compatible with the standard marking disc and hard stop disc which provides positionable limits when using DSLR lenses with infinite barrel rotation. In total, 2 marking discs and 1 hard stop disc are included. The hand wheel is removable and has a standard accessory port for use with the focus whip and crank (not included). Each kit ships in custom cut foam which fits natively into a Pelican 1500 case (not included). Included in the kit are 5 gear attachments .5 mod for Canon ENG .6 mod for Fujinon ENG .8 mod small diameter for Cinema Lenses .8 mod large diameter for Cinema Lenses Friction Gear for DSLR lenses