CURT Class 5 CD+ Trailer Hitch for Ford F-450 Super Duty, Ford F-250 or F-350 Super DutyIn the world of commercial towing, more is expected. A job cannot be completed if the equipment cannot handle the workload. That is why CURT developed the Commercial Duty and Commercial Duty+ Class 5 trailer hitches, the ultimate in rear mount hitches. Constructed from steel and engineered for power, these Class 5 behemoths come with a gross trailer weight rating that ranges from 18,000 lbs. to an unprecedented 20,000 lbs., and both share a tongue