PROFESSIONAL 6' REAR BLADE KING KUTTER'S PROFESSIONAL PRB SERIES REAR BLADES are designed for dependable performance on tough jobs. They are great for dirt work, road maintenance, and ditching, landscaping, snow removal, cleaning livestock pens plus much more. The PRB Series features a specially molded moldboard, with reinforced back bracing for extra strength and performance. All moldboards are equipped with a reversible, high carbon, heat-treated steel edge. The PRB has 7 forward and 5 reverse settings, plus they will tilt left or right and off set.