For a New River roller job the truck carries sealed 10-ball nylon rollers with 7-inch or 4-inch stems, sized for the standard sectional doors common to the 2002-median tract stock here. It also carries the plated steel rollers some higher-end New River builds specify, since a chunk of this area's housing sits well above the $74,764 median income for the wider service area - New River's own median household income runs closer to $120,279, and higher-income subdivisions out this way more often spec upgraded hardware at construction rather than the builder-grade rollers found on tract-standard doors elsewhere in the service area.
Beyond the rollers themselves: replacement stems, roller bracket hardware, track lubricant rated for high-heat service, and the sockets and vise grips needed to pull a bracket without letting the cable slip. Nothing exotic - the point of the truck stock is not running back to a supplier for a $6 part on a 14-mile round trip.