All Hyundai C Series compaction roller models are designed with serviceability in mind. Engines and other components are easily accessible, thanks to the wide opening engine hood that provides 270-degree, front and side access. The single-drum HR120C (Tier 4 Final) models is designed primarily for soil compaction applications and is powered by a highly fuel-efficient and reliable Cummins diesel engine. The compaction drum is available as a smooth or pad-foot surface.