The IndiPRO Tools Follow Focus with Friction Drive facilitates manual lens adjustments and is designed for exceptionally simple set-up and operation. Friction drive eliminates the need for lenses to have geared adjustment rings. The unit mounts on standard 15mm rod support systems. It can slide horizontally to adjust to lenses of varying sizes, and a single knob locks it in place. The handwheel features an accessory port, which provides an interface for whips, cranks and other accessories.