The Universal Lens Gear from Wide Open Camera is an 11.25" long lens gear with standard a 0.8 pitch / 32 mod gearing that makes it compatible with most geared follow focus systems. With nine holes for nine length settings, it's also compatible with most lenses. The lens gear uses zip tie fasteners to attach to your lens - simply cut it to fit. The gear's 0.5" width works with longer-throw lenses, including macros.