Kuhn RSM professional-duty roadside mowers provide efficient management of roadsides and ditches. An oscillating main frame with a floating pivot on the mowing head allows excellent terrain contouring for varying mowing conditions. The head pivot can move 55° down for mowing roadsides and ditch embankments as well as hedge mowing when moved up to 90°, making this machine very versatile. If an obstacle should be encountered, the mechanical safety breakaway system protects the mower from damage. The automatic belt tensioning system lower maintenance and provides a long working life. This model comes standard with articulated hammer knives for cutting in grass with rocks.