The GRACO RoadLazer RoadPak System is a truck-mounted pavement marking system designed for high-speed, high-accuracy road striping. The part number 16H897 appears to be a label or branding component for the RoadLazer RoadPak, rather than a functional equipment part. The RoadPak system itself is constructed from robust materials for heavy-duty use and is intended for applying paint and reflective beads to road surfaces efficiently and reliably.