The Hypac C810C Series single-drum rollers feature two amplitudes and an "optimized frequency," providing "maximum compaction results on the widest range of soil types," says the manufacturer. The smooth-drum model (C815C) is designed for work on granular and mixed-soil applications. The padfoot model, C812C, available with a leveling blade, is designed for work in cohesive and semi-cohesive soils. Both configurations use a 47.2-inch-wide drum. Operating weights range from 7,275 to 8,047 pounds.