Class Sizes 100, 600–900 JRB Construction Utility Forks turn wheel loaders into heavy-duty forklifts to safely transport large loads of construction-related materials. Safely navigate job sites carrying construction materials like pallets, pipes and related equipment with our rugged CUF’s. Perfect for construction or utility projects. Our standard offering includes many popular sizes and configurations in both manual (100 thru 900 class) and hydraulic (100 thru 800 class) operation formats.