The new single sided follow focus is built to attach directly to a 19mm rod natively and a 15mm studio rod via the included, snap-in adapter bushing. The Zip Focus has a 1:1 gear ratio and pivots to fit any lens using a minimal amount of space. The included .8 mod cine lens gear and friction gear can be flipped to the front or back position which is helpful for compact lens configurations. The hard stop disc can be used with DSLR lenses with infinite focus rotation and two standard marking discs are included for cine lenses.