This timing screw drive unit is indexing honey jars under an inline filler. The timing screws [feed screws] positively control the container to accurately position them in time under the fill heads of the filler, minimizing mess, wasted product, and downtime due to spills.
One drive unit is able to run multiple sizes of honey jars as each set of timing screws is a change part designed to be swapped out to run the new container size.